西南交通大学研究生 科技英语翻译 期末复习题

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西南交大科技英语翻译期末考试复习题附标准答案

西南交大科技英语翻译期末考试复习题附标准答案

1.Here great disturbances at the heart of the earth caused mountains and volcanoesto rise above the water.这里,由于地心的剧烈活动,使山脉和火山升出水面。

After the Australian Taxation Office made its taxation forms simpler, it actually received praise from taxpayers who could finally understand it.澳大利亚税务局将其表格文字简化后,受到了纳税人的广泛称赞,因为他们终于能看懂这些表格了Although people are born to win, they are also born helpless and totally dependent on their environment. Winners successfully make the transition from total helplessness to independence, and then to interdependence. Losers do not.虽然人们生来要成功,然而,他们同样生来就是无助的,完全依靠环境。

成功者成功地从完全不能自立过渡到了独立,然后过渡到相互依靠。

失败者则不然。

Darwin was convinced that the loss of the tastes in music and drawing was not only a loss of happiness, but might possibly be injurious to the intellect, and more probably to the moral character.达尔文认为,失去对音乐和绘画方面的兴趣,不仅失去了幸福,而且还可能损伤智力,甚至可能会伤害道德。

科技英语翻译复习重点(1)

科技英语翻译复习重点(1)

科技英语翻译复习重点(英译汉篇)一、词语意思翻译1.A fastener is a hardware device that mechanically joins or affixes two or more objects together.(直译法)紧固件是指将两个或多个物体通过机械方法固定在一起的硬件装置。

2.Machinery design is either to formulate an engineering plan for the satisfaction ofa specified need or to solve an engineering problem.(直译法)机械设计的目的是为满足特定需求而绘制工程图纸或解决工程问题。

3.In the1970s,integrated circuit technology and the subsequent creation of microprocessors futher decreased size and cost and further increased speed and reliability of computers.(增词法)20世纪70年代,集成电路技术的发展和后续的微处理器的发明进一步缩小了计算机的尺寸,降低了价格,同时加快了运行速度,提高了可靠性。

4.A power reactor has no need of oil,for the heat generated in the uranium pile is the result of nuclear fission,not of combustion.(增词法)原子动力反应堆不需要油,因为铀堆中所产生的热是核裂变的结果,而不是燃烧的结果。

5.The elementary mechanical components of a machine are termed machine elements.These elements consist of three basic types:structural components, mechanisms,and control components.(省略法)机器的基本机械构件称为机械零件,包括三种基本类型,即:结构构件、机械构件和控制构件。

翻译往年考试题交大科技英语

翻译往年考试题交大科技英语

1、本文开发了一种XX装置,可大大提高YY系统的稳定性与抗干扰能力。

This paper developed a device of XX,which could greatly enhance the stability and anti-jamming ability of YY system2、从实验结果可以看出,当X值升高的时候,Y值也将随之升高,而Z值却呈下降趋势。

至于W值的少许波动,作者认为可能是环境温度造成的结果。

如果溶液浓度或电流密度能控制的话,这种现象就会得到缓减甚至消除。

It can be seen from the experimental results that when XX increases,YYwill also increase and (however,)ZZ shows a decreasing tendency ,As for the slight fluctuation of WW, the author thanks(accordiing to author’s opinion)it may be caused by…(result from…) If the solution concentration or current density could be controlled stable,this phenomenon may acquire alleviation even elimination ,on this problem XX et al have explained in a scientific report about.3、实验结果表明,该装置的各项有关参数均符合国家工业标准,而且耐候性能大大优于进口同类产品,填补了我国在该领域的空白,也为进一步开发高性能高压电器(high-voltage apparatus)打下了良好的基础。

西南交通大学研究生科技英语翻译期末复习题

西南交通大学研究生科技英语翻译期末复习题

科技英语翻译联系200句transmit electromagnetic waves takes energy.传送电磁波需要能量control will do most of things in pest control.化学防治能在病虫害防治中起主要作用。

is not until wires are connected that the path is completed.直到导线接上以后,此电路才接通。

odds are heavily against any man being able to do the work in the field of abstract theory that Einstein is doing.对任何能从事爱因斯坦正在进行的抽象理论研究的人来说,条件都是极为不利的。

design is of an art rather than an exact science.与其说振荡器的设计是一门严谨的科学,不如说它是一门艺术。

rapid decrease by a factor of 7 was observed.发现迅速减少到(了)1/7。

and animals which hunt at night have eyes which contain few or no cones at all,so they cannot see colors.凡是夜间觅食的飞禽走兽,因为眼睛中的视维细胞数量极少或根本没有,所以不能辨别颜色。

is sometimes powerful enough to destroy a coastwise building it strikes.海啸有时威力很大,足可摧毁它所冲击的沿岸的建筑物。

everybody is convinced the Leaning Tower of Pisa really can be saved.并非每个人都相信比萨斜塔真的能免于坍塌。

科技英语翻译试题2套

科技英语翻译试题2套

1答案请写在答题纸上。

Part one: Sentence Translation(30%)1.为此,必须对电路(circuit)的基本内容有一个很好的了解。

2.这个系数(coefficient)有待确定。

3.现有的教科书均没有提这一点。

4.由于反馈(feedback)在电子线路(electronic circuit)中起着重要作用,所以对它的研究极为重要。

5.有迹象表明,计算机的价格将进一步下跌。

6.这个方法的确管用,不过到底该在什么情况下使用它尚不清楚。

7.十年前该厂的产量比现在高五倍。

8.激光(laser)是二十世纪六十年代引入的一项新技术,它能穿透(pierce)特别硬的物质。

9.为使晶体管(transistor)正常工作,必须给其电极(electrode)加(apply)上合适的电压(voltage)。

10.代表磁场(magnetic field)的磁力线(magnetic line of force)是一些围绕该导线的同心圆(concentric circle)。

11.我们所谓的机器人(robot)实际上是能为人类做工的一种工具。

12.这类天线(antenna)和那类天线相比的优点是结构简单,效率高。

13.半导体(semiconductor)对光和热都很敏感(sensitive),这两者都对导电率(conductivity)影响很大。

14.只有通过对系统性能进行研究我们才能了解其优缺点。

15.本书既讲了实际的设计方法,同时也讲述了理论问题,而重点放在一般概念上。

Part two: Mistakes Correction(30%)(Write down the corrected sentence on the answer sheet. )1. We are easy to determine the effect of new drug to patient.2. The direction of an electric current was decided before electrons were not discovered.3. Sound travel much less faster than light is.4. The price for this instrument is expensive.5. There are a few exceptions for this rule.6. The hotter the body will be, the more it radiates energy.7. The feature of this device is small in size and light in weight.8. That professor is very interesting in this topic.9. Our semiconductor industry comes into being at the end of 1950s.10. The both engineers are busy to design a type of new computer.11. Work equals to force multiplying distance.12. The new design instrument is in good quality.13. The ability for some elements to give off radiations is referred as theradioactivity.Part three:Read this article, translate the underlined sentences(15%), answer the questions (15%)and then summarize this article within 100 words (10%).The Dazzle of Lasers(激光)The acronym(首字母缩写词)"laser," describes how the device works: Light Amplification by Stimulated Emission of Radiation. In 1916 Einstein predicted that electrons(电子) in an atom could be deliberately stimulated to emit photons(光子) (light energy) of a certain wavelength. He was right. The laser must first be "pumped" with energy in a variety of ways so that the electrons are excited into higher energy states. But these high energy electrons are unstable--and fall back to a lower energy level. On the way down, their extra energy is released(释放)as light. That light is captured inside the laser and amplified by bouncing it back and forth between mirrors. The laser beam that emerges is amplified, monochromatic (单色的), coherent light --and it shines with an unearthly power.Not until 1960 did Theodore Maiman, a 33-year-old engineer at Hughes Research Laboratories, build a homely four-inch cylinder containing a ruby rod encircled by a flash tube: the world's first working laser.More than two decades later, the laser has wrought a technological revolution. Lasers are an indispensable tool for delicate eye surgery, and doctors are using lasers experimentally to destroy cancerous tumors(肿瘤), unclog(使畅通) diseased arteries (动脉) and even treat herpes(疱疹). Just as they provide new tools for health care, however, they also make possible new engines of destruction: recently Dr. Edward Teller, the father of the hydrogen bomb(氢弹), called on President Reagon to urge that the United States build a space-based laser-weapon system that would use a nuclear bomb to fire brutally intense laser X-rays against enemy missiles in flight.Today pilots flying the new Boeing 767 and 757 aircraft navigate with the aid of new laser gyroscopes(陀螺仪). Supermarket clerks use lasers to ring up prices at the checkout counter by "reading" universal bar-codes(条形码) printed on packages and canned goods. Powerful lasers cut and weld(焊) steel in factories from Detroit to Tokyo. Artists and filmmakers are beginning to use lasers for animation(动画): at Lucasfilm, George Lucas has a team of computer wizards(奇才) developing a machinethat uses a computer-driven laser to draw animated images on film; a second film, with human actors, is then merged by laser with the graphics into a single seamless (无缝的) whole.How does the laser work? Anyone who has ever focused sunlight through a magnifying glass and watched paper or dry leaves snap into flames understands the power of concentrated light. Laser light is intense, concentrated light, too, but it works on a different principle. Shine sunlight through a prism(棱镜) and it breaks into the glorious colors of the rainbow. In the scientists' vocabulary, sunlight is "incoherent" --it is made up of a mix of wavelengths spanning the spectrum(光谱)from infrared(红外线) to ultraviolet(紫外线). Laser light, on the other hand, is monochromatic and coherent-it shines at a single wavelength, and all the light waves march together in step like soldiers on parade(游行).In the two decades since its invention, the laser has undergone a dramatic transformation: a wide variety of gas, solid-state, diode(二极管) and other lasers has been created. Each shines at a different wavelength; some pulse on and off, others operate continuously.When the laser moved out of the laboratory, one of its first and most significant applications was as a medical tool. Lasers are commonly used for delicate surgery inside the eye. In treating blood-vessel disorders resulting from complications(并发症) of diabetes(糖尿病), doctors aim a fine beam of argon laser light(氩激光) through the pupil(瞳孔) of the eye and place up to 2000 tiny laser burns very closely around the back portion of the retina(视网膜). These laser "welds" prevent harmful growth or rupture(断裂) of new, unwanted blood vessels.The very properties that make lasers dangerous --power and heat--are also being put to use to destroy some kinds of brain and spinal(脊髓的) tumors. Lasers have brought a new frontier to neurosurgery(神经外科). They have made some inoperable tumors operable and high-risk tumors less high risk.Warfare is also changing as laser technology advances. Laser guidance systems have brought once unimaginable accuracy to artillery(炮). In the near future, higher-intensity lasers may be used to blind the electronic sensory systems of aircraft, missiles, tanks and ships. And ultimately, some visionaries insists, the globe could be surrounded by a platoon(排) of orbiting battle stations armed with lasers capable of destroying planes and missiles within seconds of their beinglaunched.Just as they are opening new doors to medicine and military practices, lasers are also having a profound impact on communications. Instead of sunbeams, today's light-wave communication systems use laser light ricocheting through tiny glass fibers. Lasers generate light waves at extraordinarily high frequencies--in the range of trillions of cycles per second --which makes it possible to transmit enormous quantities of information. In addition, fiber-optic cables are cheaper than copper wire and are not subject to electromagnetic interference, or the annoying cross talk(串话) and static that plague(折磨) current systems. The big breakthrough was the semiconductor laser.Someday laser light may be piped through giant optic cables into deep ocean waters to create undersea farms; it may be beamed into space to talk to orbiting space stations. Lasers also may be used to fire extremely precise light pulses at DNA molecules, altering the structure of chromosomes(染色体) and thereby repairing defective genes --or even creating new forms of life. And eventually billions of lasers will link the world in a vast information network, a global village of light.1.How does the laser work?2.What is the difference between sunlight and the laser?3.Is the laser absolutely safe? If not, please explain.4.What are the advantages of the semiconductor laser in the communications field?5.In what fields is the laser applied?Part one:1.For this purpose, it is necessary to have a good understanding of the fundamentals of thecircuit.2.This coefficient remains to be determined.3.None of the textbook available mentions this point.4.Since feedback plays an important role in the electronic circuit, its study is very important.5.There is an indication that the price of computers will fall further.6.This method does work, but it is not clear in what condition it is that it should be used.7.The output of this factory 10 years ago is 6 times what it is now.8. A new technology introduced in the 1960s, laser can pierce very hard substances.9.For the transistor to work normally, it is necessary to apply a proper voltage across theelectrode.10.The magnetic lines of force representing the magnetic field are some concentric circlessurrounding the wire.11.What is called a robot is a tool which can do work for the human being.12.This type of antenna has the advantages over that one of simple structure and high efficiency.13.Semiconductors are sensitive to light and hear, both of which have a great impact onconductivity.14.Only through a study of the system’s performance is it possible to know its advantages anddisadvantages.15.This book discusses both practical design method and theoretical problems with emphasis onthe basic concept.Part two:1.It is easy to determine the effect of the new drug on the patient.2.The direction of the electric current had been decided before electrons were discovered.3.Sound travels much more slowly that light does.4.This instrument is expensive.5.There are a few exceptions to this rule.6.The hotter the body is, the more energy it radiates.7.This device is small and light.8.That professor is much interested in this topic.9.Our semiconductor industry came into being at the end of the 1950s.10.Both the engineers are busy designing a new type of computer.11.Work equals force multiplied by distance.12.The newly designed instrument is good in quality.13.The ability of some elements ot give off radiations is referred as the radioactivity.Part three:Translation:1. 20多年前,激光引发了一场技术革命。

科技英语翻译考题整理

科技英语翻译考题整理

【科技英语翻译】考题整理1、The waster radiation is revolutionizing X-ray science, enabling researchers to see things on an atomic level with eyes that are a million times more powerful than ever before,这种被视为废物的辐射使 X 射线科学发声了一场革命:它使科研工作者能用眼睛看到原子级的东西,这一放大率比以往提高了 100 万倍。

2、If we had known the properties of the material, we should have made full use of it. 要是当时了解这种材料的特性的话,我们就会充分利用它了。

3 、Moving parts of a machine would wear much more rapidly without being oiled. 机器的运动部件如果不加油就会磨损的非常快。

4 、Cool slowly to minimize cracking. 要慢慢冷却,以最大限度的减少开裂。

5、Don`t let the stresses inside the material exceed the elastic limit, or else permanent deformation will result.不要使材料的应力超过弹性极限,否则会产生永久变形。

6 、Attention must be paid to the working temperature of the machine.应当注意机器的工作温度。

7 、Television is the transmission and reception of images of moving objects by radio waves. 电视通过无线电波发射和接受各种活动物体的图像。

科技英语阅读期末考试翻译部分解读

科技英语阅读期末考试翻译部分解读

UNIT23. Translate the sentences into Chinese.1如果能够充分满足制造量子计算机所需的条件,量子纠错就能消除物理上合理的计算误差及退相干过程所带来的影响。

2虽然这个极限视具体情况而定,但大家达成一个共识:为了实现可扩展性要求,一个量子门运用中所产生的错误率必须小于0.0001。

(错误概率是一种不太精确的量化量子计算过程错误的方法。

3满足这些要求的一个量子位的储存器已经面世了,两个量子位的储存器也快了。

4已经进行了大量实验,包括核磁共振系统(量子位与分子中核自旋相关和光学系统(用光子实现量子位。

5理想情况下,所有的(量子计算应基于一些基本元件,利用这些元件的量子特性所需的额外资源远少于用它们进行经典计算时所需。

UNIT33. Translate the sentences into Chinese.1 为了成功打击网络犯罪,我们必须保持警惕并且一起来对付犯罪者。

这需要全球政府间的通力合作以使网络罪犯陷入绝境。

2 今天的网络犯罪已经变得更加复杂,他们的攻击目标更明确,更具破坏性和更难以侦测,也就是说,在破坏被发现之前可能已经过去几天甚至几个星期了。

3 该犯罪绝大多数是出于经济目的,通常采取的形式是罪犯拦截金融证书凭据,以攻击银行账户。

4 除了大多数企业基本上都知道的并且有预防措施来阻止的病毒,今天对企业网络的最大忧虑来自于对域名和路由系统的操纵。

5 企业需要了解其日常运作所面临的威胁,而政府需要与私营部门共同采取行动,实施正确措施来产生实质的影响。

UNIT43. Translate the sentences into Chinese.1众多技术权威声称因特网具有革命性,改变着一切;随着这种言论,我们这个时代的一般趋势似乎认为历史已经停滞不前。

2产生的影响之一是在当今更加注重变化与速度、而忽视保护与长期的电子纪元,我们如何保存历史记录。

3我们即将跨入数字产品的电子纪元。

MTI科技翻译课程期末翻译练习

MTI科技翻译课程期末翻译练习

MTI科技翻译课程期末翻译练习⼀、汉译英汉译英⼀、01.景德镇四⼤名瓷概述 景德镇瓷器造型优美,品种繁多,装饰丰富,风格独特。

瓷质“⽩如⽟、明如镜、薄如纸、声如磬”,景德镇陶瓷艺术是中国⽂化宝库中的重要财富。

景德镇瓷雕制作可以追溯到⼀千四百多年前,远在隋代就有“狮”、“象”、⼤曾的制作。

当代的景德镇,瓷雕⼯艺精湛,⼯艺种类齐全,有园雕、捏雕、镂雕、浮雕等;千姿百态、栩栩如⽣;装饰丰富,有⾼温⾊温、釉下五彩、青花⽃彩、新花粉彩等;艺术表现⼒强,有的庄重浑厚,有的典雅清新,有的富丽堂煌,鲜艳夺⽬。

青花、玲珑、粉彩、颜⾊釉,合称景德镇四⼤传统名瓷,薄胎瓷称神奇珍品,雕塑瓷为我国传统⼯艺美术品。

⼀、粉彩瓷早在清朝康熙后期,景德镇的粉彩瓷就已问世,雍正时相当精致,乾隆年间达到很⾼的艺术⽔平。

“珠⼭⼋友”留下很多粉彩画的瓷器珍品,其领袖⼈物王琦,将⼀般的绘瓷⽅法应⽤于绘瓷板⼈物像,画持精深,画风新颖,被⼈们称为“神技”。

新中国成⽴后,粉彩瓷更有长⾜的发展,许多具有健康、清新、⼤⽅特⾊的新作琳琅满⽬。

艺术瓷⼚⽣产“福寿牌”粉彩瓷获国家⾦奖。

⼆、玲珑瓷 青花玲珑瓷是在明宣德年间镂空⼯艺的基础上创造和发展起来的,已有五百多年的历史。

它融青花技术之长,集镂雕艺术之妙,玲珑剔透,精巧细腻,具有清新明快之感。

据记载,清代景德镇御窑⼚制作的玲珑瓷就已具较⾼⽔平,但产量甚少,仅供宫廷使⽤。

瓷⼯⽤⼑⽚在坯胎上镂成点点⽶粒状,被⼈们称为“⽶通”,⼜叫玲珑眼,再填⼊玲珑釉料,并配上青花装饰,⼊窑烧制⽽成。

它显得灵巧、明彻、透剔,特别⾼雅秀洁。

在清代,瓷⼯把青花和玲珑巧妙地结合⼀体,形成了⼈⼈喜爱的青花玲珑瓷。

碧绿透明的玲珑和⾊呈翠兰的青花互为衬托,相映⽣辉,给⼈以⼀种特殊的美感。

玲珑瓷以玲珑剔透、晶莹雅致⽽蜚声中外。

如今青花玲珑不仅在⽇⽤中西餐茶具、酒具上普遍运⽤,⽽且已扩展到各种花瓶、花插、花钵、以及吊灯、壁灯、⽪灯等各式灯具。

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科技英语翻译联系200句1.To transmit electromagnetic waves takes energy.传送电磁波需要能量2.Chemical control will do most of things in pest control.化学防治能在病虫害防治中起主要作用。

3.It is not until wires are connected that the path is completed.直到导线接上以后,此电路才接通。

4.The odds are heavily against any man being able to do the work in the field of abstract theory that Einstein is doing.对任何能从事爱因斯坦正在进行的抽象理论研究的人来说,条件都是极为不利的。

5.Oscillator design is of an art rather than an exact science.与其说振荡器的设计是一门严谨的科学,不如说它是一门艺术。

6.A rapid decrease by a factor of 7 was observed.发现迅速减少到(了)1/7。

7.Birds and animals which hunt at night have eyes which contain few or no cones at all,so they cannot see colors.凡是夜间觅食的飞禽走兽,因为眼睛中的视维细胞数量极少或根本没有,所以不能辨别颜色。

8.Tsunami is sometimes powerful enough to destroy a coastwise building it strikes.海啸有时威力很大,足可摧毁它所冲击的沿岸的建筑物。

9.Not everybody is convinced the Leaning Tower of Pisa really can be saved.并非每个人都相信比萨斜塔真的能免于坍塌。

10.Every crane has a certain hitting capacity, ranging from a few tons to many hundreds of tons.每台起重机均有一定的起重力(量),该起重力(量)从几吨到几百吨不等。

11.The best solution is continue to reduce all sources of pollution affecting our atmousphere.最好的方法是继续减少影响大气层的各种污染物。

12. Quantum chemistry is still in its infancy. 量子化学仍处于发展初期。

13.It is these drawbacks which need to be eliminated and which have led to the search for new processes.正是因为这些缺点需要消除,才导致了对新方法的探求。

14.Real-time systems often need extraordinary precautions to guard against possible break down of computer.实时系统往往需要特别小心,以防止计算机可能发生故障。

15.The steam engine uses a fire in a boiler rather than inside the engine.蒸汽机所利用的是锅炉中的火,而不是发动机里边的火。

16.The principal advantage of the products isa two-fold reduction in weight.这些产品的主要优点是重量减轻了1/2。

17.Our primary purpose in studying fatigue is to understand why failures occur so that we can guard against them in an optimum manner.我们研究疲劳的主要目的在于了解产生失效的原因,以便能以最佳的方式加以预防。

18.This system will build on the knowledge and experience gained in developing the existing suite of software products.这个系统的基础是从开发现有的成套软件产品中所获得的知识和经验。

19.All metals do not conduct electricity equally well.并非所有的金属的导电性能都同样好。

20.It means that the mass of the comet cannot have amounted to as much as one ten-thousandth of that of the earth.这表明这颗彗星的质量甚至不到地球质量的万分之一。

21.Inspection programs help to determine when to replace parts.检验计划有助于确定更换零件的时间。

22.Many health-conscious women increase their risk by rejecting red meat ,which contains the most easily absorbed from of iron.许多保健意识太强的女性也很危险,因为他们拒绝食用牛肉或羊肉等肉,而这些肉中所含的铁质量最容易被吸收。

23.They consider it no use adding more catalysts in the solution.他们认为在溶液里再加催化剂没有用。

24The entire circuit should be checked against the schematic diagram.应该对照示意图检查整个电路。

25.This is so because the resistance to motion is essentially due to the deformation of the rolling elements and,hence, is not a sliding phenomenon.之所以这样,是因为对运动的阻力源于滚动零件的变形,而不是滑动现象。

26.The equipment reduced the error probability by a factor of 5.该设备误差概率降低了(到)4/5。

27.What we commonly call metals are in fact not metals but alloys.我们通常称作金属的东西,实际上并不是金属,而是合金。

28.A few people were infected with the AIDS virus through blood transfusions.曾有少数人通过输血传染上了艾滋病毒。

29.The performance of the machine is short of the requirements.这台机器的性能没有达到要求。

30.The major advantages of the transistor as used in electronic circuits are light weight,small space,low power consumptio n .使用在电子电路中的晶体管的主要优点是重量轻,体积小,耗电量低。

31.The specific method of cutting should be employed to decrease the generation of an andante amount of heat.应采用特殊的切割方法减少过多热量的产生。

32. While this restriction on the size of the circuit holds, the law is valid. 只要电路尺寸符合上述的限制,这条定律就能适应于该电路。

33.The “weightless”condition of astronauts in orbit about the earth arises from just this cancellation of inertial and gravitational forces.围绕地球运转时宇航员的“失重”状态,就是由于惯性力与引力相互抵消的结果。

34.It is well-known that a moving electrical charge generates a circular magnetic field around its path众所周知,运动中的电荷在其路途周围产生一个环形磁场。

35.The calculation of the values involves so many factors that only a computer can cope with it.这些数值的计算包含如此多的因子,以至于只有计算机才能对付得了。

36.When the voltage is stepped up by ten times, the strength of the current is stepped down by ten times.电压升高9倍,电流强度便降低9/10。

37.How energy and matter behave, how they interact one with the other, and how we control them make up the substance of two basic physical sciences, physics and chemistry.能量和物质具有什么特性,他们怎样相互作用以及我们如何控制它们,这就构成了物理和化学两门基础科学的内容。

38.For any machine whose input and forces are known, its mechanical advantage can be calculated.对任何机器来说,如果知其输入力和输出力,就能求出其机械效率。

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