刘毅测试1
2 0 1不锈钢热轧板边裂缺陷的原因分析和改进措施
工业技术DOI：10.16660/ki.1674-098X.2019.24.068201不锈钢热轧板边裂缺陷的原因分析和改进措施①刘毅1,2 田伟光1,2 徐佳林1,2 杜凯1,2(1.广东广青金属科技有限公司 广东阳江 529533；2.广东省高端不锈钢研究院有限公司 广东阳江 529533)摘 要：通过对201不锈钢边裂卷热轧工参和边裂卷缺陷部位进行分析，找出了201奥氏体不锈钢热轧板边裂的主要原因是板坯偏窄、S、N、Cu、Mn含量过低和板坯出加热炉后边部冷却过快导致铁素体含量过高，针对以上问题制定了工艺优化措施，并取得明显效果。
关键词：201不锈钢 边裂 S含量 Cu含量 铁素含量过高中图分类号：TG335 文献标识码：A 文章编号：1674-098X(2019)08(c)-0068-05①作者简介：刘毅（1990—），男，汉族，广东阳江人，本科，中级工程师，研究方向：不锈钢质量管理。
201不锈钢是一种低镍的奥氏体不锈钢，属Fe-Cr-Ni 系合金，是奥氏体不锈钢的主要代表牌号。
生产201不锈钢板时，经常在板带边部出现裂口的缺陷，称之为边裂，边裂缺陷分部无规律性，在板带边部任何位置都有分部，黑皮能被观察到。
板坯宽度偏窄和炼钢S、Cu含量和板坯加热之后边部温降过快形成大量铁素是导致201热轧不锈钢热轧板带形成边裂的主要原因，通过分析广东广青金属科技有限公司第一和第二炼钢厂1#~3#连铸机200mm×1245mm炼钢成分、板坯宽度和热轧轧线温降情况，为进一步提高热轧板带合格率，提供理论依据。
1 生产工艺概述广东广青金属科技有限公司炼钢厂和热轧厂的工艺流程：75tRKEF×8座→AOD 75t×8座→喂丝精炼吹氩站×2座→连铸机×3→→加热炉→高压水除磷→粗轧→飞剪→精轧→层流冷却→卷取机×2。
产生边裂缺陷的主要工序为转炉、连铸和加热炉。
广交会之行刘毅
广交会之行2011年10月13日，在欧总的安排部署下，我们一行六人带着公司的信任、寄托和希望，前往广州琶洲参加第110中国进出口商品交易会。
这一届广交会分为三期进行。
第一期：10月15日至19日；第二期：10月23日至27日；第三期：10月31日至11月4日。
每一期将在A、B、C三个场馆中开展，涉及到石墨行业的展区位于第一期的C馆，具体类别属于化工产品类。
我们分为三个组，分头进行参观，收集同行及下游行业的相关信息。
我们一边参观，一边向可能成为我们客户的客商发我们的产品资料、名片，增进彼此之间的了解。
虽然这次商品交易会主要是针对外贸，但我们也不能放弃发展内贸的机会。
这次交易会的规模之大，客商之多，集中体现了各领域的先进技术和水平。
石墨行业的参展商有天生、中科恒达、埃立特等。
他们展出的产品种类繁多，金属缠绕垫片、石墨高强垫片、石墨复合板、石墨纸、盘根等。
而且质量高，外表美观，包装精美，还附上了详尽的产品资料。
在参观他们的商品中，我们对产品有了更进一步的了解，他们在这次广交会上代表了中国的石墨行业，并在通过出口来壮大中国的石墨行业，为我们树立了榜样。
这次无论他们能不能接到订单，能不能在国际上宣传中国的石墨行业，他们都是好样的，是石墨行业的领羊人物。
石墨行业的下游行业参展商有全国各地的化工厂、法兰制造厂、阀门制造厂等。
他们的生产设备中管道是必不可少的。
在我们和他们的接触中，发现这些厂商确实需要我们的石墨密封件。
虽然他们这次是来参加广交会的，主要目的是寻找他们的国外客商，但我们可以利用这个机会结识他们，争取在以后的发展中成为我们的客户。
通过这次广交会，我们收集了大量资料，大开眼界，对销售有了更进一步的见解。
就我们业务员而言，首先要找准销售的方向，一方面寻找管道、泵阀的销售商，让他们代理我们的石墨密封件，在这一环节中追求销量；另一方面直接寻找终端客户，如化工厂、法兰制造厂、阀门制造厂等下游产业，在这一环节中追求价格，从这两方面来认真开展销售工作。
刘毅10000单词测试(英译中)
Lesson 11.The pregnant woman has an enlarged abdomen.2.The lost hikers were bereft of hope when the rescue plane did not see them.3.The children are bereaved by the death of their parents.4.This battlefield is cones-crated to the memory of the soldiers who died here.5. A good joke does not necessarily evoke a hearty laugh.6.Wheels left grooves in a muddy dirt road.7.The old car jolted its passengers badly as it went over the rough road.8.Bowing to greet a lady is now an obsolete custom.9.Many wild animals prowl at night looking for something to eat.10.The children scooped holes in the sand.11.Diplomats are interested in the status of world affairs.12.The farmer sued the railroad station because his cow was killed by the train.13.The bandit in a typical Western movie rides a horse and goes armed, either alone or in a group.14.Christmas commemorates the birth of Jesus Christ.15.The children’s muddy shoes defiled all the rugs in the hotel.16.Running in the hall is a deviation from the school rules and will not be allowed.17.She could bear the disappointments of other people with tolerable fortitude.18.The little girl was inconsolable at the loss of her kitten.19.Aren’t you hungry? Y ou are only nibbling your food.20.The coronation of the new king was a splendid pageant.21.After the scourge of flood usually comes the scourge of disease.22.The crippled child tumbled down the stairs and was badly hurt.23.There are many illnesses which afflict old people.24.His employer censured him for neglecting his work.25.The thief intruded into their house with caution and dissimulation.26.Nowadays, it is an in-humane punishment to flog the disobedient soldiers or sailors.27.According to the inscription on its cornerstone this building was erected in 1919.28.The gifts of charity meddled with a gentleman’s private affair.29.He doesn’t sit straight; his posture is very bad.30.John rummaged all the drawers to find his gloves.31.The water spouted out when the pipe was broken.32.The climber traversed a long horizontal crack in the face of the mountain slope.33.A child stood looking with wistful eyes at the toys in the shop window.34.The amicable flash of her white teeth was very impressive.35.The soldiers are very exhausted for they have advanced forward without rest in a blizzard.36.If I were rich, I would like to cruise in the Southern Pacific for six months in a private yacht.37.Y ellow fever has been eradicated in the United States but it still exists in some countries.38.The doctor’s report gave us only a glimmer of hope.39.On his desk, many articles and documents are always piled in a great lump.40.The woman ransacked the house for her lost jewelry.41.He slashed a path through the high grass with a long knife.42.Our feet slumped repeatedly through the melting ice.43.That pop-song had a great vogue at one time.44.He ascribes his success to skill and hard work.45.The soldiers kept their heads down behind the bulwark.46.She looked around this way and that in a dubious manner.47.Selfishness was a facet of his character that we seldom saw before.48.For the first time he had to pay heed to his appearance, and in fact he became very well-dressedform then on.49.The boys huddled together under the rock to keep warm.50.The old man mumbled something to me, but I could not understand him.51.This ruined bridge is a relic of the Gulf War.52.Automobile exhaust fumes are one of the major causes of smog.53.The thirsty wayfarer was glad to find a fresh spring near the road.54.He always speaks with his mouth full of food; it is his wont.Lesson 21.The judge absolved the man of the crime.2.The umpire should have no bias in favor of either side.3.Our baseball team is con-tending for the champion-ship.4.We deplore the terrible traffic accident, in which 30 persons were killed and 50 injured.5.The boy fell from a tree and suffered fractures of his right arm and leg.6. A crowd of great magnitude attended the President’s inauguration.7.The pith of his speech was focused on the importance of education.8.I have no relish for seeing people being whipped.9.Trying not to be seen, they quietly sneaked into the room.10.The messenger brought tidings form the battle-field.11.Many people would be aghast at the thought of another war.12.We shall not cumber our thoughts with his reproaches.13.The city government decreed that all dogs must be licensed.14.The children were frolic-king with the puppy in the backyard.15.There was much commercial intercourse between the two countries before World War II.16.In dry weather forest fires are a great menace.17.I was standing on the very edge of a bank, a precipice not less then fifty feet deep.18.The church is generally considered as a sanctuary.19.After a light spring rain, leaves began to sprout from trees.20.She trod lightly in order not to wake the sleeping baby.21.The soldiers still had their guns but they were out of ammunition.22.The doting mother alienates her husband lavishing too much love their child.23.The artist was engrossed in his painting that he didn’t notice the people watching him.24.If you got a deep cut in your arm, there’s usually a gush of blood.25.The deep river was an insuperable barrier to those who could not swim.26.Her life has been full of ordeals: sickness, poverty and loss of her beloved son.27.He kept his tobacco in a leather pouch fastened to the belt.28.The brakes screeched and the car suddenly stopped with a jerk.29.A man who is six feet tall is above the average stature in China.30.The President’s enemies are spreading ill rumors to undermine his authority.31.The house is unsafe since the foundations were undermined by floods.32.Damages form last week’s flood have been assessed at $50,000.33.The children searched each and every chamber of the house for the cat.34.The Congress of the United States has two chambers: the Senate and the House of Representatives.35.Now that she is rich, she disdains to speak to her old friends.36.One day Robinson Crusoe espied a footprint on the sand.37.The beautiful glossy coat of the cat shone as it lay in the sunlight.38.The janitor swept the floors and locked up the building every night.39.She bought a packet of envelops at the stationery store.40.The eloquent and ornate carving on a church pulpit was done by Indian hands.41.The meat was black and scorched outside but still raw inside.42.The grass is scorched by so much hot sunshine in summer.43.The shop surged in the stormy seas, rolling and pitching with each wave.44.Pots, pans and kettles are useful kitchen utensils.45.When the soldiers ran out of ammunition, they fixed bayonets to their rifles.passion for the orphans caused him to give money for their support.zy boys sometimes are detained at school to do extra work after ordinary les-sons are finished.48.The police detained the suspected thief for more questioning.49.A faction in our club tried to make the president re-sign.50.The diamond shone with every hue under the bright sun.51.He polished the metal until it had a fine luster.52.The deeds of heroes add luster to a nation’s history.53.He persevered in his study until he succeeded.54.Because of his high fever, the sick man raved all night.55.He intended to slay his father’s murderer.56.The doctor told her to take three tablets a day.57.Nowadays an actress with voluptuous beauty seems to be very popular.Lesson 31.The only access to the farm house is across the rice fields.2.Only high officials had access to eh emperor.3.The guide for visitors beckoned us to follow him.4.I concur with the speaker in condemning every criminal.5.This summer two weeks of rain concurred with our vacation.6.He was denounced as a coward and traitor.7.The first blow makes the anger, but the second makes the fray.8.Long wear had frayed the collar and cuffs of his old shirts.9.Heavy clothing hampered the movements of the climbers.10.Cancer and tuberculosis are serious maladies in every country.11.Te old man was plodding wearily along the bank of the river.12.Since the factory moved, this town has only a remnant of its former population.13.The child with a cold in his nose snored all night.14.Blood tinged the water as he washed his wound.15.It was necessary for them to have remedies for their ailments.16.The children are bickering with each other about who is the tallest among them.17.The inventor contrived a new kind of parts.18.The bright light of the motor car on the dark country road dazzled my eyes.19.She fumbled about in her handbag for a pen to write a memorandum.20.Poor food and hard work impaired her health and she became thin.21.The parents were mortified by their children’s bad behavior before the guests.22.The United States became the predominant nation in the Western Hemisphere.23.He worked to improve the sanitary conditions of slums.24.He always keeps a lot of money in his wallet.25.Do you consider the wild behavior of the crowd was enough of a warrant for the police to useforce?26.The Ford Foundation allocated millions of dollars for cancer research.27.The brawl in the street could be heard in the house nearby.28.The boys made several cynical remarks to cover up their disappointment at being left out of theplay.29.She embellished the simple dress with colorful laces and ribbons.30.The defense of the Alamo was a heroic action of gallant men.31.He immersed his aching feet in a bucket of cold water.32.He rode his new bicycle up and down in front of our house in an ostentatious way.33.Soapy followed the man with a presentiment that luck would again run against him.34.She was so satiated with bananas that she would not even look at one.35.The field of wheat was undulating in the breeze.36.A shop selling woman’s apparel is at the corner of the street.37.He cajoled his friends into deciding in his favor.38.Y ou can discard your old coat but not your old friends.39.During the middle ages, Greek civilization declined and became effete.40.She has had a grudge against me ever since I disagreed with her.41.Four men kidnapped the little girl, but the police soon caught them and rescued the girl.42.There is some hope that a peace pact will be signed between the two countries.43.She pries too closely into the private life of her friends.44.Men scoured the whole country looking for the lost child.45.The servant scoured the frying pan until it shone like silver.46.He swaggered down the street after winning the fight.47.The building of this house in the shape of the temple was a rich man’s vagary.48.Ability to get along with people is an asset in business.49.There was a deep political chasm between the two countries which nearly led to a war.50.The cities of Greece and Asia were despoiled of their most valuable ornaments.51.I became angry with the little boy at his facetious remarks.52.The wing of the airplane came off and the machine hurtled to the ground.53.He wanted to be accused of larceny, because he felt comfortable in prison.54.He worked so hard that the weariness pervaded his whole body.55.Though he was tortured to make him change his religion, the prisoner would not recant.56.He left his affairs in a complete shambles when he died.57.Eating human flesh is a taboo in countries.58.He wore all the trappings of high office.Lesson 41.When the king abdicated his throne, his brother succeeded him.2.Ability to think clearly will accrue to you from good habits of study.3.The salesman has been badgering my father for two weeks to buy a new car.4.They succeeded in baffling the enemy’s attack plans.5.He conjectured that his new stocks would rise on the stock market.6.The poor woman’s mind has been deranged for many years.7.The natives thought the explorer was possessed by a fiend.8.The mother was pining to see her son and daughter.9.The gas almost smothered the coal miners but they got out in time.10.The long climb up the mountain made her heart throb rapidly.11.Some tiny plants grow in the crevice of the stone wall.12.The duke’s son demeaned himself by doing manual labor with his servants.13.We fostered the young girl while her mother was in hospital.14.Our country has prospered various incentive systems.15.A guide led us through the maze of tunnels in the cave.16.She pored over the picture book in silence enjoying the various colors.17.Like human skin, soil has holes that are called pores.18.Pick up the rubbish and throw it in the garbage can.19.We don’t need to speculate about the possible winner in the game.20.Sweet music caught and held him transfixed against the iron fence.21.A bird that cannot fly is anomaly.22.If you look at the end of your nose, your eyes converge.23.We have a duplicate key to the front door.24.The introduction of the compute will mark an epoch in language.25.Hunger and suffering from cold has made the lost hikers gaunt.26.The incessant barking of the dog kept him awake through the night.27.Though the teacher asked a simple question about her parents, the little girl stood mute withembarrassment.28.He was a passionate partisan of these people and had organized a Worker’s Union.29.The parents of the sick boy scanned the doctor’s face for a sign of hope.30.She scanned the newspaper in a few minutes.31.He stabbed a piece of meat from the plate with his fork.32.I tried to cook a nice dinner, but I’m afraid I’ve rather botched it.33.Her new shoes chafed the skin on both her feet.34.After a brisk morning wind dissipated the clouds, the sky was clear all day.35.The foolish son dissipated his father’s fortune by spending it on drinking and gambling.36.The inscriptions on the ancient monuments have been effaced by time.37.There was a glint in her eyes that showed she was angry.38.Overtime work is often onerous, though it is well paid.39.The girl did not move though the policeman iterated his command that she go.40.Most boys have a propensity for playing with machinery.41.Mother singed chicken to get rid of hairs.42.The little boy put on his father’s medals and strutted around the room.43.There are many kinds of diseases that medical science is yet to unravel.44.He bellowed in pain when the hammer came down on his finger.45.The horseback ride drew his cloak tightly around him in the rain.46.His friendly behavior was a cloak for his evil intention.47.The minister was a very devout man and devoted his whole life to Christian mission work.48.A man appeared at the castle gate in the guise of a woodcutter.49.The power of a grain of wheat to grow into a plant remains latent if it is not planted.50.He pawned his watch to buy food until he could get a job.51.When the cannon was fired, the earth quaked under his feet.52.After the ship sank, salvage of its cargo was impossible.53.Famine has often been the sequel of war.54.The battle was won with so great a loss of soldiers that it was a virtual defeat.55.He does things that are marvelous or apparently impossible; he is a wizard.Lesson 51.He admonished his friend not to be late for his work.2.He seems to be doing nothing, but really he’s just biding his time.3. A man who cheats on his income tax and on his expense account tends to condone these practicesin his friends.4.I designate you to act for me while I am away.5.Most animals let their young fend for themselves at an early age.6.Only hardy plants will survive the severe cold in the Arctic area.7.Baseball players do exercises at the beginning of the season in order to limber themselves up.8.Y ou must pay in humiliation of spirit for every benefit received at the hands of philanthropy .9.Can you recollect the name of the author of Ivanhoe?10.He was smitten with the view that he stopped and took out his camera.11.According to the testimony of the medical profession, the health of the nation is improving.12.He liked the bitter taste of the ale; beer is his favorite drink.13.Blend the butter and the sugar before adding other ,ingredients of the cake.14.The carnivorous animals are characterized especially by large, sharp canine teeth.15.The common English sparrow is a denizen of America; it was first brought from Europe toAmerica about 1850.16.She was in a frenzy of grief when she heard that her child was missing.17.The player’s injury incapacitated him for participating in the football match.18.The hunters came from the East to massacre the buffalo of the plains, killing several million in ashort time.19.When I asked his advice he pondered the matter and then told me not to go.20.To the riddle“What walks on four legs in the morning, two legs at noon, and there legs in theevening?” the answer is“man”.21.The father spanked the naughty child for his bad manners.22.The old man tottered across the room and sat down on the sofa.23.He tried to appease the crying child by giving him candy.24.The war was a terrible catastrophe in which many people died and many buildings were destroyed.25.He felt completely daunted by the difficulties that faced him.26.The crowd gaped at the daring tricks performed by the tightrope walker.27.He will be in the hospital for the duration of the school year.28.We implored him to act before it was too late.29.She muffled her throat in a warm scarf so as not to catch a cold.30.On April Fool’s Day people often play pranks on each other.31.Soapy took the umbrella and sauntered off with it slowly.32.There was a trickle of blood from the wound on his face.33.She was astounded by the news that she had won the speech contest.34.The people living in that valley are all members of one clan.35.That man’s speech distorted the truth.36.While traveling, they entrusted their children to the care of a baby sitter.37.Sometimes he gets hungry and eats like a glutton.38.Unless a check is signed, it is invalid.39.He became an invalid as the result of ill health and lack of exercise.40.His words were polite but there was an overtone of anger in his voice.41.They probed his past career to judge his qualifications.42.There are many sacred shrines in the Near East.43.The statute increased the taxes we must pay.44.The wounded soldier writhed uncomfortably in pain;45.Watching the first man land on the moon, we beheld a sight never seen before by man.46.They should change this bad habit and condescend to be pleased with the common people.47.More than 5,000years ago the Chinese were controlling the Y ellow River floods with dikes.48.The farmers dug a deep dike to carry water to the rice field.49.He flipped a coin on the counter to decide whether to go to the theater or not.50.My uncle who had travel-led to many countries in the world told a grisly story about people whoate human flesh.51.The knaves who set fire to the barn have been caught and sent to prison.52.The general held a parley with the enemy’s leader about exchanging prisoners.53.There is not a shred of evidence that the missing money was stolen.54.The judge surmised his guilt; there was no proof that he killed the man.55.The future is so uncertain that we cannot know all the vicissitudes of our fortunes.56.The fire warden told us not to light matches near the gas station.Lesson 61.Most people abhor the criminal for kidnapping the children.2.If you boost me up, I can reach the window easily.3.His friend’s willingness to help him was a big boost to his morale.4.The jail is used for detention of persons who have been arrested.5.He gave such explicit directions that everyone understood them.6.Wise teachers avoid invidious rules against the students.7.Y ou malign a generous person when you call him a stingy person.8.In places where the water is not potable, they set up purifying systems.9.I never went to school, and I’ve rued it bitterly all my life.10.People in the far north subsist chiefly on fish and meat.11.She was such an unruly child that nobody could get along with her.12.The boy had an agile mind, and could come up with excuses as quickly as his mother asked forthem.13.His lack of money was the result of caprice in spending on unnecessary things.14.She is disconsolate about the death of her father.15.It is a popular fallacy to, suppose that riches always bring happiness.16.She gave ingenuous answers to all of the strangers’ questions.17.I saw a mirage that made, the highway ahead seem to be flooded with water.18.The heavy thunderstorm precluded our going to the beach.19.Sheer white curtains hung at the little window to let in as much light as possible.20.From the top of the wall there was a sheer drop of 100 feet to the water below.21.His letter was succinct, with all the major points on one page.22.There is not much arable land on the side of a rocky mountain.23.The winner’s complacent smile annoyed the loser in the football game.24.The wolves dismembered the deer’s dead body with their sharp teeth.25.After the war, the defeated country was dismembered and could no longer be called a nation.26.She danced with glee when she saw the new toys which her father bought for her birthday.27.He gave us implicit consent to take the apples, for he smiled when he saw us do it.28.Someone is spreading mischievous stories about the minister’s private life.29.In the sentence “She lives alone by herself” the word “alone” is redundant.30.The solicitude shown to him by his neighbors after the robbery impressed him very deeply.31.The bank keeps a large surplus of money in reserve.32.The doctor gave him some medicine to abate the pain.33.His ambition was consummated when he won the prize.34.Our savings have dwindled since my wife was sent to hospital.35.It is a haphazard timetable lessons are held and sometimes they aren’t.36.It is obvious that a blind man ought not to drive an automobile.37.I know only his overt reasons for refusing; he may have others.38.We tried to be friendly, but his rebuff made us think he wanted to be left alone.39.He was sad and his thought about the future was very somber.40.The boy’s lack of money thwarted his plans for college.41.I have a vehement hatred of people who are cruel to animals.42.The benign old lady sent us a kind and warm smile.43.The sergeant was degraded to private for the reason of disobeying orders.44.My other writings are very ephemeral, but this book will be remembered forever.45.People who have never gone to school are usually illiterate.46.Not every rich man is lavish in spending money.47.It is a mistake to lavish kindness on ungrateful people;48.He is the one who is peddling the drugs unlawful.49.She reproved the maid in an angry voice for breaking the dish.50.Many kinds of fabrics, furs and drugs are synthetic products.51.His unbounded courage and compassion made in him an excellent leader of the nation.52.He was wretched when he failed the entrance examination again.Lesson71.She continued to work in a blithe spirit in spite of all difficulties.2.She was feeling dejected and unhappy until the good news cheered her up.3.He is an erratic fellow whose actions are usually completely unpredictable.4.When he was a child, his life contained noble ambitions and immaculate thought.5.The little girl loathed to leave her mother for studying abroad.6.The woman in this painting has a pensive smile.7.I was retarded form keeping an appointment by a business conference that lasted most of the day.8.She was proud of her stalwart, good-looking grandson.9.During his illness he shunned all society, and in particular those who had been his dearest friends.10.They quarreled with such a loud noise that their voices were audible to the neighbors.11.The new boy had an auspicious first day in the elementary school.12.She was filled with elation at the news that she won the first prize in her class.13.The haughty man thinks highly of himself while holding others in contempt.14.The officer’s violation of a regulation is more of a jeopardy than the enlisted man’s offense.15.It is mandatory to pay a debt within a certain period of time.16.The teacher rebuked the student for throwing the examination paper on the floor.17.Not many people came to see the game; the sparse crowed was scattered thinly through thestadium.18.A mister gives undue importance to making and saving money.19.The doctor’s friendly manner helped the patient allay his fear.20.Gluttony and drunkenness have been called carnal vices.21.A family name becomes defunct when the only heir dies without any son.22.Of the many plans submitted, the committee selected the plan that seemed most feasible.23.The boy showed ingenuity in making toys out of scraps of discarded wood.24.My joke caused a great deal of mirth among the little children.25.Soldiers on the battlefield lead a precarious life.26.Some people believe that fate has preordained whether they will be happy or unhappy.27.At the council broad he was taciturn and never opened his lips.28.His eldest brother died after the venomous bite from the rattlesnake.29.The doctor said there was nothing amiss with her.30.This anthology comprises samples from the work of ten authors.31.Families that quarrel in the privacy of the home do well to dissemble when they go out to dinner.32.A glib door-to-door sales-man sold her a set of books that she did not want.33.Before World War II, the French thought their Magi-not Line as and invincible bulwark againstGerman invasion.34.The lazy little boy gave his face a perfunctory.35.The Disneyland tour was replete with unexpected thrills and suspense.36.We respectfully solicit your continuous friendship and patronage.37.The nation will soon be liberated from the foulest thralldom.38.Give the flowers some water regularly, or they will wilt.39.That abominable place was so dirty and evil smelling that he turned away in disgust.40.Brainy students could understand easily what the teacher explained to them.41.As the morning progressed, the weather deteriorated more and more.42.In German he was an exquisite stylist, and he brought to that language a new sensitivity in the artof story-telling.43.Cancer is not longer and incurable disease nowadays; it can be remedied by using radioactivity.44.Manual workers often earn more than office workers.45.This workbook has a teacher’s manual in which examination problems and their answers areincluded.46.He is a potential leader to control this large state.47.They are such ruthless parents that they never give presents to the children on Christmas Day.48.Her explanations for failure to do the work were voluble but not easily believed.49.Theater lobbies were filled with a vociferous crowd during the intermission.Lesson 81.The weather in early December was bleak and unpleasant.2.The electric inspector was castigated for having failed to check the wire as he was supposed to.3.We should overcome the worst that the tyrant’s enmity can do.4.In any case, parents should be impartial toward each of their children.5.The teacher asked me to give a lucid explanation of my being late for class.6.The old man is confused most of the time but he does have lucid moments.7. A square has four 90-degree angles made by its four perpendicular sides.8.In retrospect many good opportunities were neglected in my life.。
和我一起背单词刘毅3000(第十课第四节)
和我一起背单词<刘毅3000>(第十课第四节)第10课第4节单词1parliamentn.国会Paliament is the lawmaking group in Great Britain.国会在英国是立法机构.同.congress2peppern.胡椒Pepper is used for making food taste better.胡椒可使食物更美味.3poetryn.诗 The teacher praised her great efforts at poetry.老师称赞她肯下苦功作诗.4previewn.试映Before the movie was shown to the students, there was a preview for the teachers. 在电影放映给学生看之前,对老师先有一场试映.5providev.供应The farm provided them with all the food they needed. selina260347881d7004c6e农场供应他们需要的所有食物.selina260347881d7004c72同.supply;furnish6recklessadj.鲁莽的Two children were killed by a reckless driver.两个孩子被鲁莽的司机撞死.7repairv.修理We'd better repair the house before we move into it.在我们搬进去前,先修理一下房子.同.mend;fix8saintn.圣人They named their child after the saint.他们用圣人的名字来给他们的孩子命名.9searchv.寻找We searched all day for the lost cat.我们整日寻找那只走失的猫.10sheriffn.警长The sheriff brought the captured criminal before the judge.警长将被捕的罪犯带到法官面前.从以上单词中选出最适当的一个单词,填入空格内.1 The ( ) in the United Kingdom is made up of the Queen, the Lords and the elected representatives of the people.2 Shakespeare and Milton were masters of English ( ).3 ( ) driving causes many automobile accidents.4 The ( ) pursued the man who robbed the bank.5 They will ( ) the school building during the summer vacation.答案:1The (parliament) in the United Kingdom is made up of the Queen, the Lords and the elected representatives of the people.英国国会是女王建立的,内阁和议会是人民选出来的.2Shakespeare and Milton were masters of English (poetry).莎士比亚和缪尔顿是英国诗歌名家.3(Reckless) driving causes many automobile accidents.鲁莽的驾驶导致了很多车祸.4The (sheriff) pursued the man who robbed the bank.警长抓住了抢劫银行的男人.5They will (repair) the school building during the summer vacation.他们准备在暑假期间维修校舍.【。
一元二次方程公式法
九年级数学(上)第二章一元二次方程一元二次方程的解法内江市第五初级中学校刘毅回顾与复习1我们通过配成完全平方式程的根,这种解一元二次方程的方法称为用配方法解一元二次方程的方法的平方根的定义:a复习练习1用配方法解下列方程1、用配方法解下列方程29+802x 2-9x+8=0x ∴x配方法回顾与复习2用配方法解一元二次方程的:步骤11系1( 1.化1:把二次项系数化为1(方程两边都除以二次项系数);2 2.移项:把常数项移到方程的右边;3.配方:方程两边都加上一次项系数（绝对值）一半的平方;4.变形:方程左分解因式,右边合并同类;5.开方:根据平方根意义,方程两边开平方;,;6.求解:解一元一次方程;7.定解:写出原方程的解.方法能否用配方法把一般形式的一元二次方程20(0)ax bx c a ++=≠“”2转化为() =常数的形式呢？解x ∴x当bb ∴∴解：这里解∵∴即：即解：化简为一般式：解：去括号：∵∴原方程没有实数根解下列方程解下列方程：2260x x +−=(1)242x x +=（2）2441018x x x ++=−（3）（4）x 2-x-4 = 0（2-x-4=0（4）x x 4 = 0解: 方程整理得::用公式法解下列方程 1). 2x −−=−= 2). x 2＋4x ＝2； 3). x 2 -x –4 = 0 ; ().62;62.221+x x ().56;2.321−==x x ); 4). 4x 2+4x+10 =1-8x ；5)x 2－0().23.421−==x x 2222−=+= 5). x 6x ＋1＝0 ； ().3;3.521x x 32 2、计解下列方程(1). x(2). 9x(3). (2x-1)(x-2) =-1;由以上研究的结果，得到了一元二次方程的求根公式：利用这个公式，我们可以由一元二次方程中系数的解，这种解方程的方法叫做的解。
基于980nm泵浦激光器的恒温驱动设计
www�ele169�com | 15电子电路设计与方案0 引言半导体激光器是光纤通信、光纤传感等领域中不可或缺的重要器件。
一方面，其可以作为直接调制光源，用于主干网以及接入网的信号源；另一方面，半导体激光器常常被用作光纤激光器、掺铒光纤放大器等器件的泵浦源，为信号的产生和放大提供能量来源[1]。
而伴随着掺铒光纤放大器、光纤激光器等器件研究的不断深入，对半导体泵浦激光器的工作性能也提出了更高的要求。
发现其对温度特别敏感，温度稳定性能高的不仅能带来各光学器件相关参数的稳定输出，同时也会提高整个光通信系统的整体性能和安全可靠性[2]。
半导体光源大多最理想的工作温度是25℃，在此温度下光源寿命最长。
随着半导体光源连续工作，特别是大功率LD 工作时，光源放出的热量会使自身的温度上升，导致光功率下降，对半导体激光器而言，波长会向长波方向漂移。
为避免上述问题，需要设计一个能够实时监控激光器实时温度并且精确控制的系统。
1 温度控制原理半导体致冷器(Thermoelectric Cooler)是利用半导体材料的珀尔帖效应制成的。
所谓珀尔帖效应指的是当直流电流通过两种半导体材料组成的电偶时，其一端吸热，另一端放热的一种现象，一对电偶产生的热电效应很小，故在实际中都将上百对热电偶串联在一起，所有的冷端集中在一边，热端集中在另一边，这样生产出用于实际的致冷器。
980nm 激光器的内部集成了半导体热电制冷器（TEC）和负温度系数的热敏电阻。
温度控制的原理是通过测量温敏电阻的阻值来获得当前激光器的工作温度再反馈控制流过TEC 的电流大小和方向使其加热或制冷，使热敏电阻的温度保持在设定的温度上，从而使激光器的工作温度稳定。
980nm 光纤光源示意图如图1所示。
图1中，±TEC 为制冷器的电流输入端，电流由正端输入，负端输出时为加热状态，而电流反向则为制冷状态。
在控制温度时，需要设计制冷器控制电路，通过A/D 传回的温度数据经微处理器软件控制制冷器工作。
刘毅演讲式英语 1
1.Self -IntroductionLadies and gentlemen: 女士们, 先生们:It’s great to be here! 很高兴来到这里!I’d like to introduce myself.’我介绍一下我自己.My name is Pat 我的名字叫帕特I’m a student. 我是名学生I come from Beijing. 我是北京人I’m an outgoing person. 我很外向I love to meet people. 我喜欢与别人接触Meeting people is my forte.(专长) 和别人打交道是我的专长I’m very frugal(节省) 我很节省Money doesn’t burn a hole in my pocket. 我不会乱花钱But I like to be generous(慷慨) with my friends. 但是我喜欢对朋友慷慨I have many bobbies.(爱好) 我有很多爱好I enjoy many things. 我喜欢做的事很多I like reading, exercising and traveling.我喜欢阅读,运动和旅行Traveling is my life. 旅行是我的最爱I love to travel. 我爱旅行I’m not a stick in the mud.(泥土) 我不习惯老是呆在一个地方不动I’m always on the go. 我总是到处走动I’m always on the move. 我总是动个不停I would never let the grass grow under my feet. 我绝不会待在一个地方不动I’m a rolling stone. 我很好动I can’t keep still. 我无法静止不动I can’t stay in one place too long. 我不能在一个地方待太久I want to see the world. 我想看看这个世界I want to see the unseen. 我想去看没看过的东西I want to do what’s never been done before. 我想做以前没做过的事My ambition(志愿,野心) is to be a great English teacher. 我的志愿是成为一名很棒的英语老师Teaching English is my passion. 教英语是我的爱好Mastering English is my goal. 学好英语是我的目标I won’t accept mediocrity.(平庸) 我不能接受平庸I want to grow. 我要成长I want to improve all aspects of my life, physically, spiritually, and academically. 我要从身体，心灵和学术上改进我人生的各个方面I’m willing to work hard. 我愿意努力工作I’m willing to pay price. 我愿意付出代价I’m prepared to go the distance, through thick and thin, in good times or bad, under any circumstances. 我准备坚持到底，在任何情况下，无论甘苦，无论情况是好是坏。
刘毅：突破英文词汇1000lesson1
1abdomen['æbdəmən]n.腹，下腹(胸部到腿部的部分)2belly['beli] n.肚子，腹部；(像肚子一样)鼓起的部分，膛3bereave[bə'ri:v]v.使痛失(亲人等)；剥夺；使丧失4deprive[di'praiv]v.剥夺，使丧失；免去…的职务5consecrate['kɔnsikreit]v.使圣化，奉…为神圣；尊崇；奉献6devote[di'vəut]v.将…奉献(给)，把...专用于，致力于7evoke[i'vəuk]v.唤起(回忆、感情等)；引起8invoke[in'vəuk]v.求助于(神、法律)；恳求，乞求9groove[gru:v]n.沟，槽；凹线，(刻出的)线条；习惯10furrow['fʌrəu]n.沟；垄沟；轨迹；车辙；皱纹11jolt[dʒəult]v.(使)摇动，(使)震动，(使)颠簸12joggle['dʒɔgəl]v./n.轻轻颠摇13obsolete['ɔbsəli:t] a.作废的；过时的14antiquated['æntikweitid] a.陈旧的，过时的15prowl[praul]v.徘徊于；搜寻；潜行以寻觅或偷窃16rove[rəuv]v./n. 漫游；流浪(于)17scoop[sku:p]n.勺子v.用勺子(或铲)取出，舀；挖；掘18shovel['ʃʌvəl]n.铁锨；一铲之量v.铲，铲出19status['steitəs]n.地位，身份；情形，状况，状态[ˌsitʃu'eiʃ(ə)n]n.形势，局面，处境，状况；位置；职20situation位21sue[sju:]v.控告，对…提出诉讼，起诉22indict[in'dait]v.起诉，控告，指控23bandit['bændit]n.土匪，强盗，歹徒24brigand['brigənd] n.土匪，强盗25commemorate[kə'meməreit]v.纪念，庆祝26celebrate['selibreit]v.庆贺，庆祝；表扬，赞美27defile[di'fail]v．弄污，弄脏n．(山间)小道28infect[in'fekt]v.传染，感染；影响…的心情，给…示影响29deviation[ˌdi:vi'eiʃən]n.背离，偏离；偏差，偏向；离题30delegate['deligeit]n.代表，会议代表v.委派…为代表；授权31fortitude['fɔ:titju:d]n.坚忍不拔；刚毅[in'djuərəns]n.耐久力；忍耐力；耐久的时期；持续32endurance的时间[ˌinkən'səuləbəl] a.无所慰藉的，极度沮丧的，伤心33inconsolable的34depressed[di'prest] a.沮丧的，抑郁的；不景气的，萧条的35nibble['nibəl]v.一点点地咬，慢慢啃36bite[bait]v.咬，叮；刺骨n.叮，咬；吃一口37pageant['pædʒənt]n.壮观的游行；露天历史剧38exhibition[eksi'biʃ(ə)n]n.展览，陈列；展览会39scourge[skə:dʒ]n.灾难，祸害v.蹂躏40disaster[di'zɑ:stə]n.灾难，大祸；彻底的失败41tumble['tʌmbəl]v.摔跤，跌倒；打滚，翻腾n.摔跤，跌倒[groundfɔ:l]v.落下；跌倒；下降n.落下；下聊；秋42fall季43afflict[ə'flikt]v.使身体或精神受痛苦，折磨44distress[di'stres]n.(精神上的)苦恼，痛苦v.使苦恼，使紧张45censure['senʃə]v./n.责备；非难；责难46blame[bleim]n.(事故等的)责任；责怪v.责备，应受责备47dissimulation[diˌsimju'leiʃən]n.假装；掩饰48deception[di'sepʃən]n.欺骗，欺诈；骗局，诡计49flog[flɔg]v.重打，鞭打50spank[spæŋk]v. 打，拍打(在屁股上)51inscription[in'skripʃən]n.(尤指石块上的)刻印文字，铭文，碑文52caption['kæpʃən]n.图片说明文字(报刊文章的标题)53meddle['medl]v.干预，干涉，插手54intervene[ˌintə'vi:n]v.插入，介入，干涉，(时间)介于55posture['pɔstʃə]n.姿势，姿态；心态，态度v.装模作样56attitude['ætitju:d]n.态度，看法；姿势57rummage['rʌmidʒ]v./n.翻寻，仔细检查58ransack['rænsæk]v.彻底搜索，洗劫59spout[spaut]v.喷出，涌出；滔滔不绝地讲n.喷管；水柱60pour[pɔ:r]v.灌；蜂拥；倾泻；(雨)倾盆而下n.倾泻61traverse['trævə:s]v.横过，穿过，越过62intersect[ˌintə'sekt]v.惯穿，(和…)相交，交叉63wistful['wistfəl] a.渴望的；不满足的64yearning['jə:niŋ] a.渴望的；向往的；怀念的65amicable['æmikəbəl] a.和平的，友好的；友善的66amiable['eimiəbəl] a.和蔼可亲的，友善的，亲切的67blizzard['blizəd]n.暴风雪68snowstorm['snəustɔ:m]n.暴风雪；雪暴69cruise[kru:z]v.巡航；游弋n.乘船巡游70voyage['vɔi-idʒ]n.航海，航行v.航海，航行于(海上)71eradicate[i'rædikeit]v.根除，消灭，杜绝72extirpate['ekstə:peit]v.除尽；灭绝73glimmer['glimə]v.发出闪烁的微光n.微光，微弱的闪光74gleam[gli:m]n./v.微光，闪光，短暂而微弱的闪现75lump[lʌmp]n.块；堆；团；大量；肿块v.归并在一起76block[blɔk]n.大块；一排房屋；街区(四条街中间的区域) 77slash[slæʃ]v.猛砍；贬斥… n.猛砍；(衣服的)开叉78gash[gæʃ]v.深切，划开n.(深长的)切(伤)口；裂缝79slump[slʌmp]v.陷；沉重地坐下或倒下n.商业萧条期80depress[di'pres]v.使沮丧，使低沉；降低，压低；使萧条81vogue[vəug]n.时髦，时尚，流行a.流行的82fashion['fæʃ(ə)n]n.(服饰等的)流行式样；(行为等的)风尚83ascribe[ə'skraib]v.(to)把…归于，认为…是其人所做['ætribju:t, ə'tribju:t]v.(to)把…归于，认为是…的结84attribute果n.属性85bulwark['bulwək]n.堡垒，保障86safeguard['seifgɑ:d]v.维护n.安全装置，安全措施87dubious['dju:biəs] a.有问题的，靠不住的；犹豫不决的88doubtful['dautful] a.怀疑，犹豫，不相信的；可疑的，难料的89facet['fæsit]n.(问题等的)侧面，一面；(多面体的)面90aspect['æspekt]n.样子, 外表, 面貌, (问题等的)方面91heed[hi:d]v.注意，留意n.注意，留心92attention[ə'tenʃən]n.注意，注意力；立正；特别照顾；照料93huddle['hʌdl]v.挤作一团，乱堆n.一堆，一团94gather['gæðə]v.集合，聚集；采集，收集；逐渐增加；推测95mumble['mʌmbəl]v.含糊地说，咕哝n.含糊的话，咕哝96murmur['mə:mə]v.低声说话，咕哝n.低沉连续的声音，咕哝97relic['relik]n.遗迹，古物；圣徒的遗骸(或遗物)，圣物98remainder[ri'meində]n.剩余物，剩余；剩下的人；余数99smog[smɔg]n.烟雾(由smoke+fog合成的词)100fume[fju:m]n.(浓烈或难闻的）烟，气，汽101wayfarer['weiˌfɛərə] n.旅人；徒步旅行者102traveller['trævələ] n.旅馆；旅游者103wont[wəunt] a.习惯于v./n.习惯。
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I. 找出一个与题前中文意思相同的单词(20%)1．枯萎A rub B utter C wither D resort2．愤怒A wage B voyage C pitch D rage3．排出A deny B frighten C vanish D discharge4．督学A excellence B superintendent C faculty D curse5．轻拍A nod B tap C tangle D rub6．沉默的A. dull B dumb C dim D damp7．良心 A conscience B mammal C motive D pang8. 魅力 A. prospect B charm C cottage D palm9. 袖子A staff B sleeve C straw D slant10. 外科医生A surgeon B physician C suggestion D colleague11. 印象 A. impression B. feature C. device D. quality12. 用具 A. instrument B. deed C. patch D. sword13. 整洁的 A. neat B. stern C. sole D. obvious14. 降低 A. subtract B. leak C. lower D. fall15. 侮辱 A. defeat B. condemn C. proclaim D. insult16. 相反的 A. contrary B. crude C. positive D. loyal17. 陪审团 A. gallop B. clay C. jury D. mayor 18．生物学 A. biology B. colony C. surgeon D. vocabulary19. 拥抱 A. owe B. possess C. assure D. embrace20. 耐心 A. error B. patience C. bravery D. justiceII. 找出与斜体字意义相近的词1 weary in mind and body(A) healthy (B) sound (C) tired (D) warm2 edible fish(A) trivial (B) audible (C) eatable (D) tiny3 The failure of the rice harvest will cause great distress among the farmers.(A) worry (B) debt (C) yell (D) damage4 reckless behavior(A) safe (B) careless (C) innocent (D) earnest5 bold behavior(A) common (B) brave (C) lazy (D) military6 The old house is enclosed with trees.(A) protected (B) prevented (C) disclosed (D) surrounded7 He threw the mirror on the floor, but there was not a crack in it.(A) sound (B) crevice (C) stake (D) trick8 to surrender unconditionally(A) conquer (B) love (C) escape (D) yield9 John likes to have raw vegetables(A) soft (B) cheap (C) rotten (D) unripe10 The soldiers stood beside their horses, waiting for the order to mount.(A) relieve (B) run (C) dismiss (D) climb11.You always follow your own inclinations instead of thinking of our feelings.A conductsB profitsC occupationsD dispositions12. We should be cautious in crossing a crowded street.A carefulB intelligentC quietD weary13. I quivered with fear at the strange sound.A shookB escapedC stungD suffered14. This factory yields cars of good quality.A sellsB buysC producesD offers15. The general decided to attack the enemy’s position.A offendB opposeC guardD assault16. Coal can be converted to gas by burning.A reducedB yieldedC changedD separated17. A team of four horses dragged the big log out of the forest.A fetchedB pulledC pushedD carried18. The bird fluttered its wings in the cage.A snatchedB flappedC lashedD reflected19. The boys shrieked when they saw the terrible accident.A hailedB disturbedC approachedD screamed20. We saw the immense statue of the hero, thirty times life size.A entireB hugeC divineD magnificent III.选出最适合句意的一个单词（10%）1. We need a great of coal for this coming winter.A. empireB. pitC. bubbleD. bulk2. There was not enough to prove him guilty of crime.A. facultyB. evidenceC. conflictD. police3. Though he didn’t have much money to give, he was very with his money.A. curiousB. magnificentC. generousD. neutral4. He doesn’t work in the office any longer; he from his job several years ago.A. retiredB. retainedC. strainedD. resumed5. I gave him my old text-books and received a dictionary in .A. preparationB. proposalC. exchangeD. proportion6. In his attempt to escape, the prisoner was by a watchful guard.A. amusedB. frustratedC. wreckedD. plucked7. Government makes laws and the police them.A. stretchB. disposeC. extendedD. enforce8. Your presence was a to me at such a sad time.A. discriminationB. consolationC. crashD. stalk9. The gardener the dead branches form the trees.A. trimmedB. deservedC. protectedD. repaired10. He has a(an) appearance even though he is not well.A. wearyB. apparentC. wholesomeD. grandIV. 找出一个与斜体词的意义相反的单词(20%)：1. deceitful (A) dull (B) grand (C) neutral (D) frank2. compliment(A) conflict (B) blame (C) success (D) failure3. shame(A)charm (B) rug (C) boldness (D) challenge4. delight (A) pleasure (B) sorrow (C) horror (D) scorn5. scorn (A) contempt (B) wet (C) cooperation (D) respect6. evident(A) firm (B) ambiguous (C) excellent (D) plain7. vanish(A) draw (B) appear (C) wither (D) deny8. humble(A) proud (B) cheap (C) huge (D) firm9. conceal(A) discharge (B) disclose (C) reject (D) vanish10. monotony(A) ambition (B) hardship (C) variety (D) nonsense11. dawn (A) dusk (B) daybreak (C) authority (D) blossom12.profane (A) secular (B) sacred (C) peculiar (D) extreme13. exempt (A)retire (B) notify (C) involve (D) faint14. ascend (A) frustrate (B) descend (C) protect (D) debate15. discord(A) baffle (B) mourn (C) haunt (D) harmonize16. trivial (A) reckless (B) important (C) gradual (D) wealthy17.relief (A) suspicion (B) border (C) operation (D) distress18. silly (A) wise (B) calm (C) troublesome (D) careless19. verse (A) tired (B) prose (C) plain (D) chilly20. biased (A) reciprocal (B) partial (C) fair (D) wholesome21. perilous A. terrible B. dull C. safe D. changing22. exit A. gain B. encourage C. include D. entrance23. d issuade A. persuade B. conquer C. conceal D. concern24. abundance A. fury B. scarcity C. quantity D. quality25. combine A. scare B. consolidate C. split D. prohibit26. ordinary A. queer B. physical C. positive D. grace27. withdrawal A. possess B. leap C. exhaust D. advance28. stern A. abundant B. mild C. severe D. thorough29. merit A. wonder B. victim C. defect D. benefit30. grief A. folly B. pleasure C. competition D. journey31. smooth(A) stubborn (B) rough (C)sharp (D) cruel32. moderate (A) hollow (B) legal (C)cautious (D) excessive33. gloomy (A) extreme (B)gay (C)keen (D)forthright34. arrogant(A) smooth (B) modest (C)soft (D) dull35. miserable (A) tender (B)modest (C)fortunate (D) clever36. virtue(A) spider (B) lack (C)leisure (D) vice37. foul(A) dirty (B) clean (C)dry (D) dump38. peril(A) safety (B) favor (C)comfort (D) grief39. perish(A) dwell (B) stumble (C)repair (D) persist40. temporary(A) lonesome (B) cold (C)immediate (D) permanent。