化工专业英语翻译练习
a pilot plant is a collection of equipment dsigned and constructed to investigate some critical aspect of a process operation or perform basic reserch.it is a tool rather than an end in itself.a pilot plant can range in size from a labratory bench-top unit to a facility only marginally smaller than a commercial unit.the purposed process;providing design data;determining the econmic feasibility of a new process;determinging optimum materials of construction;testing operability of a control scheme;determinging the extent of plant maintenance;producing sufficient quantitics of product for market evaluation;obtaining kinetic data;screening catalysts;proving ateas of advanced technology;providing data for solutions to scale-up problems;providing technical suppot to an ecisting process or product assessing process hazards;determining operating costs;optimizing an existing process;and perdorming basic prcess research.
ethylene continues to far suroass all other hydrocarbons both in volume and in diversity of commercial ues.in the whole field of petrochemcials,it is exceeded in tonnage only by synthetic ammonia.the major consmers of tehlyene are low density polythylene,ethylene oxide,high densitypolyethylene,ethylene dichloride,ethylbenzene,ethylene oligomers,ethanol,acetaldehyde,vinyl acetate,ethylene-prolylene eladtomers,propioaldehyde,ethylene dibromide and other.
organic compouds present a complexity of structures and properties as varied as life itself.perhaps 10 million organic compounds are now known,each with its unique molecular structure,name,and chemical and physical properties.to bring a sense of order to this enormous number and almost oncomprehensible variety of carbon compounds,chemists have organized them into families of compunds of similar molecular structures and similar propperties.one of the largest of these is the family of hydrocarbons,composed exclusively of compounds containing just two elements,hydrogen and carbon.the very simplest of the hydrocarbons,with just one carbon atom per molecule and with the lowest molecular weight of all organic compounds,is methane,CH4.。
化工专业英语翻译华东理工大学胡鸣版
Unit 1 Chemic al Indust ry化学工业1.Origin s of the Chemic al Indust ryAlthou gh the use of chemic als datesback to the ancien t civili zatio ns, the evolut ion of what we know as the modern chemic al indust ry starte d much more recent ly. It may be consid eredto have begunduring the Indust rialRevolu tion, about1800, and develo ped to provid e chemic als roe use by otherindust ries. Exampl es are alkali for soapma king, bleach ing powder for cotton, and silica and sodium carbon ate for glassm aking. It will be notedthat theseare all inorga nic chemic als. The organi c chemic als indust ry starte d in the 1860swith the exploi tatio n of Willia m HenryPerkin‘sdiscov ery if the firstsynthe tic dyestu ff—mauve. At the startof the twenti eth centur y the emphas is on resear ch on the applie d aspect s of chemis try in German y had paid off handso mely, and by 1914 had result ed in the German chemic al indust ry having 75% of the worldmarket in chemic als. This was basedon the discov ery of new dyestu ffs plus the develo pment of both the contac t proces s for sulphu ric acid and the Haberproces s for ammoni a. The laterrequir ed a majortechno logic al breakt hroug h that of beingable to carryout chemic al reacti ons undercondit ionsof very high pressu re for the firsttime. The experi encegained with this was to standGerman y in good stead, partic ularl y with the rapidl y increa sed demand for nitrog en-basedcompou nds (ammoni um sal tsfor fertil izers and nitric acid for explosi vesmanufa cture) with the outbre ak of worldwarⅠin 1914. This initia ted profou nd change s whichcontin ued during the inter-war years (1918-1939). 1．化学工业的起源尽管化学品的使用可以追溯到古代文明时代，我们所谓的现代化学工业的发展却是非常近代（才开始的）。
化工专业英语第五篇翻译
Distillation 蒸馏The separating operation called distillation utilizes1 vapor and liquid phases at essentially the same temperature and pressure for the coexisting zones. Various kinds of device such as dumped2(倾倒;堆放) or ordered3 packings4 and plates5 or trays5 are used to bring the two phases into intimate （亲密的；隐私的）contact. Trays are stacked（叠，层叠）one above the other and enclosed（装入）in a cylindrical shell to form a column6. Packings are also generally contained（包含；容纳）in a cylindrical shell between hold-down7 and support plates.称为蒸馏的分离操作是利用蒸汽相和液体相在基本相同的温度和压力下相互接触进行的。
各种设备，诸如散装的或者整砌的填料以及塔板或者塔盘用于使两相充分接触。
一块塔盘置于另一块之上并装入一个圆筒中形成一座塔。
填料一般也是装入圆筒中的支承板与压板之间。
1. Continuous Distillation (Fig.7) 连续蒸馏The feed material, which is to be separated into fractions1, is introduced at one or more points along the column shell. Because of the difference on gravity between vapor and liquid phases, liquid runs down the column, cascading2(成瀑布状落下；溢流) from tray to tray, while vapor flows up the column, contacting liquid at each tray.需要分离为几个馏分的物料从塔壳上的一个位置，或者几个沿塔高分布的位置进入塔中。
化工专业英语lesson4翻译
仅供参考Iｎｔｒoduction to Oｒganｉc Ｃheｍiｓt ｒy1．Ｓources of Orｇaｎic ＣompｏunｄsTｈe major sourｃes of orｇanic cheｍｉｃａｌs ａre coal, petｒole ｕm, ａnd agriculturａｌprｏｄucｔｓ．Both coal and pｅtrｏlｅu ｍweｒe formｅd througｈthe gｅologic prｏcesseｓof ｃhanging aｎimal anｄpｌant rｅmains iｎto ｃarbｏn-contaｉniｎg reｓiｄues. Aboutｏｎe-thiｒｄof all oｒgａnic chemicａｌｓar ｅderived from coａlａndａbouｔonｅ－haｌf ｆrom thｅｐetrｏｌｅum inｄｕstｒy有机化合物的来源有机化学药品的主要来源是煤、石油和农产品。
动植物的遗体通过地质作用变成含碳残基然后形成煤和石油。
三分之一的所有有机化合物品是从煤中得到的,一般来自于石油工业。
２. ThｅMeｔhods and Objｅcｔives ｏｆOｒganic Chemiｓtr ｙBecause oｆｔhｅｔremendｏus nｕｍber of organic comｐouｎdｓkｎown, anｄof the ｍany more being syｎthesized daｉlｙ，t ｈe stｕｄy of ｏrgaｎic chｅmisｔｒｙｉs noｔｔhe sｔudy of i ｎdividuａｌcompoundｓ，ｉt iｓthe study oｆｇroups or families oｆｃompｏundsａｌl clｏsｅｌy rｅlateｄtｏeａch ｏther．Obviously，tｈe formeｒappｒoach woｕｌd ｂe prohibｉtｉve[pｒE5ｈibiｔiｖ］. Ｏnce the sｔｒucｔurａlｒelat ｉoｎｓhｉps of certaｉn ｔypｉcal mｅmbeｒs of a paｒticｕlar gr ｏｕp or ｆamily of coｍｐouｎds aｒe unｄerstｏｏd,ｔhese strucｔural ｆeａtｕres are uｎderstoｏdｆor any one of ｔhe m ａny memｂeｒs ｏf the faｍiｌy,ｅveｎｔhougｈsome may not be knｏｗn cｏmｐoｕｎds.因为已知的有机化合物的数目庞大,而且还在逐日合成更多的品种,所以有机化学不是研究单个的化合物,而是把彼此密切相关的化合物按类或族来研究。
化学化工专业英语翻译1
化工专业英语第三篇翻译
Heat Transfer 传热Heat, as a form of energy, cannot be created or destroyed. Heat can be transferred from one substance to another.热是能量的一种形式,不能创造也不能消灭。
热可以从一个物体传递到另一个物体。
Heat always tends to pass from warmer objects to cooler ones. When a warm substance comes in contact with a cold substance, the molecules of the warm substance collide （碰撞） whth the molecules of the cold substance, giving some of its energy to the cold molecules. This is only one way to transfer heat.热总是倾向于从较热的物体向较冷的物体传递。
当一个暖的物体与一个冷的物体接触时，暖物体的分子与冷物体的分子碰撞，把他们的部分能量传给冷物体的分子。
这仅仅是传递热的一种方式。
In a chemical plant, for example, in a refinery （炼油厂）, transfer of heat is very important , the successful operation of most processes is dependent on correct application of the principles (原理) of heat transfer. Where we are handling （处理；加工；操纵） a hot material, we may insulate（隔离，绝缘） the system to hold the heat in; where the material is cold, we insulate to keep the heat out. Efficient equipment, designed to take full advantage of (充分利用) processing heat, is in use on almost all chemical plants.在化工厂，例如一个精炼厂，传热是非常重要的，大多数过程的成功运行取决于传热原理的正确运用。
化工专业英语练习题 参考答案
练习一参考答案1将下列句子或段落翻译成英语1)A process is any operation or series of operations that causes a physical or chemical change in asubstance or a mixture of substances .The material that enters a process is referred to as input or feed the process,and that which leaves is called output or product.2)As a chemical engineer,you might be called on to design individual process units (such as reactors,distillation columns,heat exchangers),supervise the operation of a process,or modify a process design to accommodate a change in the feed or in the desired product characteristics.As a rule,to any of these things you must know the amounts,compositions,and conditions of the materials that enter and leave each process unit,and if you are working with an existing units,you must be able to measure enough of these quantities to verify that the process is doing what it was designed to do.3)Founded in 1839from a small production firm for pharmaceutical products,B.Braun has grown steadilyinto a multinational company dealing with medical products,medical technology,pharmaceutical and biotechnology.2将下列句子或段落翻译成汉语1）包括的一系列操作，如混合、蒸发、过滤，无论产物是什么，这些操作都基本同，从而导致了单元操作的概念。
化工专业英语翻译全
Unit 1 Chemical Industry化学工业1．化学工业的起源尽管化学品的使用可以追溯到古代文明时代，我们所谓的现代化学工业的发展却是非常近代（才开始的）。
可以认为它起源于工业革命其间，大约在1800年，并发展成为为其它工业部门提供化学原料的产业。
比如制肥皂所用的碱，棉布生产所用的漂白粉，玻璃制造业所用的硅及Na2CO3. 我们会注意到所有这些都是无机物。
有机化学工业的开始是在十九世纪六十年代以William Henry Perkin 发现第一种合成染料—苯胺紫并加以开发利用为标志的。
20世纪初，德国花费大量资金用于实用化学方面的重点研究，到1914年，德国的化学工业在世界化学产品市场上占有75%的份额。
这要归因于新染料的发现以及硫酸的接触法生产和氨的哈伯生产工艺的发展。
而后者需要较大的技术突破使得化学反应第一次可以在非常高的压力条件下进行。
这方面所取得的成绩对德国很有帮助。
特别是由于1914年第一次世界大仗的爆发，对以氮为基础的化合物的需求飞速增长。
这种深刻的改变一直持续到战后（1918-1939）。
1940年以来，化学工业一直以引人注目的速度飞速发展。
尽管这种发展的速度近年来已大大减慢。
化学工业的发展由于1950年以来石油化学领域的研究和开发大部分在有机化学方面取得。
石油化工在60年代和70年代的迅猛发展主要是由于人们对于合成高聚物如聚乙烯、聚丙烯、尼龙、聚脂和环氧树脂的需求巨大增加。
今天的化学工业已经是制造业中有着许多分支的部门，并且在制造业中起着核心的作用。
它生产了数千种不同的化学产品，而人们通常只接触到终端产品或消费品。
这些产品被购买是因为他们具有某些性质适合（人们）的一些特别的用途，例如，用于盆的不粘涂层或一种杀虫剂。
这些化学产品归根到底是由于它们能产生的作用而被购买的。
2．化学工业的定义在本世纪初，要定义什么是化学工业是不太困难的，因为那时所生产的化学品是很有限的，而且是非常清楚的化学品，例如，烧碱，硫酸。
化工专业英语第一片翻译
Elements and Compounds元素与化合物Elements are pure substances that can not be decomposed(分解) into simpler substances by ordinary chemical changes. At present there are 109 known elements. Some common elements that are familiar to you are carbon, oxygen, aluminum, iron, copper, nitrogen, and gold. The elements are the building blocks of matter just as the numerals 0 through 9 are the building blocks for numbers. To the best of1 our knowledge, the elements that have been found on the earth also comprise(包含) the entire universe.元素是单纯的物质，不能通过一般的化学变化分解成为更简单的物质。
目前已知有109个元素。
一些你熟悉的常见元素是碳、氧、铝、铁、氮和金。
元素是组成物质的基本单元，就象0到9的数字是组成数的基本单元一样。
就我们所知，已经在地球上发现的元素也是组成整个宇宙的元素。
About 85% of (85 percent of) the elements can be found in nature , usually combined with other elements in minerals and vegetable matter or in substances like water and carbon dioxide. Copper, silver, gold, and about 20 other elements can be found in highly pure forms. Sixteen elements are not found in nature; theyhave been produced in generally small amounts in nuclear explosions (爆炸)and nuclear research. They are man-made elements.大约有85%的元素可以在大自然的矿物或者植物中，以及如水和二氧化碳这样的物质中找到，通常与别的元素结合。
化工专业英语(期末练习题)
PRACTICE一,英译汉Hydrolyze —水解 Alkane —烷烃 Evaporation —蒸发 Aluminum —Al Oxidation —氧化反应 Methylamine —甲胺 Halogen —卤素 carbon dioxide 混合物 binary compounds 二元化合物 Cyclohexane —环己烷 monophase 单相的 polyethylene 聚乙烯 stainless steel 不锈钢 aminobenzene 苯胺 1. The Ideal-Gas Equation of State 理想气体状态方程 2. The First Law of Thermodynamics 热力学第一定律 3. Reaction Rates 反应速率 4. Activation Energy 活化能 5. Separatory Funnel 分液漏斗 6. Homogeneous Catalysis 均相催化7. Conjugate Acid-Base Pairs 共轭酸碱对 8. The Common-Ion Effects 同离子效应9. The Solubility-Product Constant 溶度积常数 二，命名 1. 甲烷 methane2. 2-甲基-3-乙基辛烷 3-ethyl- 2-methyloctane3. 2-乙基-1,3-丁二烯 2- ethyl -1, 3-butadiene4. 环己烷 Cyclohexane5. 对二甲苯 paraxylene6. 乙酸甲酯 Methyl acetate7. 醋酸 Acetic acid8. 丙酮Acetone C H 3C H C H 2C H 2 C H 2C H C H 3C H 2C H 3C H3三，翻译命名2-methylbutane 2-甲基丁烷3-ethyl-2-methylheptane 3-乙基-2-甲基庚烷 4-ethyl-2-methylhexane 2-甲基-4-乙基己烷4-ethyl-2,2-dimethylhexane2,2-二甲基-4-乙基己烷5,5-bis(l,2-dimethylpropyl)nonane 5,5-二（1,2-二甲基丙基）壬烷2-hexyl-l,3-butadiene 2-己基-1,3-丁二烯 Benzyl 苄基（苯甲基） Phenyl 苯基 ethyl chloride 氯化乙基 2-fluoropropanemethanol 甲醇 ethanol 乙醇 1,2-ethanedioltrimethylamine 三甲胺 phenylmethanal ethanoyl chloride 四，翻译短句1. Acetylene (乙炔) is hydrocarbon especially high in heat value.乙炔烃特别是高热值2. It is common knowledge that bodies are lighter in water than they are in air.大家都知道，水中的物体比在空中更轻。
《化工专业英语》练习题
《化工专业英语》练习题一、词汇翻译1. hydrochloric acid2. pigments3. sulphuric acid4. potassium hydroxide5. sodium chloride6. ammonium nitrate7. methane8. sillicon9. calcium carbonate10. carbon dioxide11. calcium carbonate12. acetylene13. potassium chloride14. mercury oxide15. geodesic dome16. crystallography17. symmetrical18. hybridize19. polyurethane20. dynamite二、阅读理解Passage 1A mysteriousblack cloudapproaches the earth-our planet's weather is severely affected. Throughout the rest of June and July temperatures rose steadily all over the Earth. In the British isles the temperature climbed through the eighties, into the nineties, and moved towards the hundred mark. People complained, but there was no serious disaster. The death number in the U. S. Remained quite small, thanks largely to the air-conditioning units that had been fitted during previous years and months. Temperatures rose to the limit of human endurance throughout the whole country and people were obliged to remain indoors for weeks on end. Occasionally air-conditioning units failed and it was then that fatalities occurred. Conditions were utterly desperate throughout the tropics（热带地区）as may be judged from the fact that 7943 species of plants and animals became totally extinct. The survival of Man himself was only possible because of the caves and cellars（地窖）he was able to dig. Nothing could be done to reduce the hot air temperature. More than seven hundred million persons are known to have lost their lives. Eventually the temperature of the surface waters of the sea rose, not so fast as the air temperature it is true, but fast enough to produce a dangerous increase of humidity（湿度）. It was indeed this increase that produced the disastrous conditions just remarked. Millions of people between the latitudes of Cairo and the Cape of Good Hope weresubjected to a choking atmosphere that grew damper and hotter from day to day. All human movement ceased. There was nothing to be done but to lie breathing quickly as a dog does in hot weather. By the fourth week of July conditions in the tropics lay balanced between life and total death. Then quite suddenly rain clouds appeared over the whole globe. The temperature declined a little, due no doubt to the clouds reflecting more of the Sun's radiation back into space, But conditions could not be said to have improved. Warm rain fell everywhere, even as far north as Iceland. The insect population increased enormously, since the burning hot atmosphere was as favorable to them as it was unfavorable to Man many other animals.1. In the British Isles the temperature. （）A）stayed at eightyB）ranged from eighty to ninetyC）approached one hundredD）exceeded the hundred mark2. Few people in the United States lost their lives because. （）A）the temperature was tolerableB）people remained indoors for weeksC）the government had taken effective measures to reduce the hot temperatureD）people were provided with the most comfortable air-conditioners3. Millions of people in Cairo（开罗）and the Cape of Good Hope（好望角）were subjected to a choking atmosphere because. （）A）the temperature grew extremely hotB）the temperature became damper and hotter as the humidity of the surface waters of the sea increasedC）their conditions were too dangerousD）nothing could be done with the hot temperature4. By the fourth week of July conditions in the tropics were such that. （）A）human survival would be impossibleB）more and more people would lose their livesC）fewer people could be savedD）survival or death was still undecided5. The insect population increased due to. （）A）the hot airB）the tropical climateC）the rain cloudsD）the damp atmospherePassage 2I don't think there is anything wrong with your blood. The key to your problem is that long nap（打盹,小睡）after dinner. If you didn't sleep for hours during the early part of the evening, you would be more ready tosleep at bedtime. If you didn't nap after dinner, you would not want to stay up so late, and you would not feel the need to take a sleeping pill. The pill is still working in your system when you get up in the morning. This helps account for the fact that you feel tired all day. You should get out of the habit of sleeping during the evening. Right after your evening meal, engage in some sort of physical activity - a sport such as bowling, perhaps. Or get together with friends for an evening of cards and conversation. Then go to bed at your usual time or a little earlier, and you should be able to get a good nights rest without taking a pill. If you can get into the habit of spending your evenings this way, I am sure you will feel less tired during the day. At first it may be hard for you to go to sleep without taking a pill. If so, get up and watch television or do some jobs around your house until you feel sleepy. If you fall asleep and then wake up a few hours later, get up but do not take a sleeping pill. Read a while or listen to the radio, and make yourself a few hours' sleep that night, you will feel better in the morning than you usually feel after taking a pill. The next night you will be ready to sleep at an earlier hour. The most important thing is to avoid taking that nap right after dinner and avoid taking pills.6. According to the writer, it is difficult for you to go to sleep because. （）A）you get the habit of staying up lateB）you haven't taken sleeping pillsC）you sleep for hours after dinnerD）you fail to do some exercises7. Which of the following is NOT true if you want to get out of the habit of sleeping during the evening? ( )A）Go to bed earlier than usual.B）Talk with friends after dinner.C）Stay with friends after dinner.D）Do some physical labor.8. You feel tired all day probably because? ( )A）you stay up too lateB）you get up too early in the morningC）you take sleeping pillsD）you wake up too frequently at night9. Which of the following is true according to the passage? ( )A）You mustn't take sleeping pills in order to get a good night's sleep. B）You should stay up if you want to sleep effectively.C）Food is necessary at night if you fail to go to sleep.D）It is very important to get out of the habit of taking a nap after dinner.10. We may infer that the author is most probably a（）A）doctorB）scientistC）reporterD）professor三、英译汉1. Perhaps you are a health science major, looking forward to a career in medicine or pharmacy. If so, you will want to become familiar with the properties of aqueous solutions, which include blood and other body fluids.Chemists have made many life-saving products over the past few decades. These range from drugs used in chemotherapy to new antibiotics used against resistant microorganisms.2. Farm soils generally contain a limited quantity of the nitrogen compounds that plants require for growth.In such soils, compound nitrogen is the limiting reactant in a plant’s biochemical processes. Byapplying ammonia and other nitrogen fertilizers to the soil, farmers increase the quantity of this limiting reactant, thereby dramatically boosting the production of soy beans, wheat, and other crops.3. The food industry uses hydrochloric acid to make corn syrup from cornstarch and to make gelatin from bones. These reactions involve the breaking down of large molecules to smaller ones by the action of the acid.Hydrochloric acid is present in the gastric juice of the stomach, where it aids in the digestion, or breakdown, of foods, including the changing of starches to sugars.。