科技英语翻译句子.pdf

精品 精品 A black hole exerts a strong gravitational pull and it has no matter.黑洞产生很强的吸引力，可是它没有物质。A calorie is defined as the quantity of heat required at one atmosphere to raise the temperature of one gram of water through 1，usually from 14.5 to 15.5.一卡路里定义为在一个大气压力条件下，使一克水温度增加1所需要的热量，通常是指从 14.5 t 提高到 15.5。A chicken is a suitable specimen for the study of the general external features of a bird.鸡是研究禽类外部特征的合适范例。A collection of data is called a data set,and a single observation a data point.一批数据叫数据集，（而）单个观测结果叫数据点。A computer is a device which takes in a series of electrical impulses representing information,combines them,sorts them,analyses and compares the information with that stored in the computer.计算机是一种装置，该装置接受一系列含有信息的电脉冲，对这些电脉冲进行合并，整理，分析，并将它们与储存在机内的信息进行比较。A computer work many times more rapidly than nerve cells in the human brain.计算机工作起来比人类大脑中的神经细胞要快很多倍。A cork floating on water is not swept along with the water.Rather,it moves up and down with the wave motion.漂在水面上的软木塞没有随波流走。相反，它随波上下浮动。精品 精品 A deep wound,where the supply of blood and oxygen has been cut off,is the perfect place for certain kinds of bacteria to grow.深的伤口是某些种类的细菌孽生的理想场所，因为那里的供血和供氧被切断。(译为原因状语从句)A drilled hole can be made accurate and smooth by a?reamer.钻好的孔可用铰刀加工，使其尺寸精确，表面光滑。A few people were infected with the AIDS virus through blood transfusions.曾有少数人通过输血传染上艾滋病毒。A fly wheel stores energy and evens out fluctuations in the speed of the engine.飞轮可储存能量，因此可使发动机的速度波动平稳下来。A force involves direction as well as magnitude.一个力不仅有大小，而且有方向。A liquid is made to circulate through pipes in the refrigerator,picking up heat from the food.是某种液体在冰箱的管子中环流，从而带走食物中的热量。A material object cannot have a speed greater than the speed of light.一个物体的速度绝不会超过光速。A milky white fluid called lymph carries impurities and waste away from the tissues and passes through gland-like structures spaced throughout the lymphatic system that act as filtering valves.淋巴，一种乳白色的液体，把（人体）各组织内的杂质和代谢废物带走，并通过腺状结构这些腺状结构分布在所有的淋巴系统内起着过滤网的作用。A new type of car is now being developed powered by anhydrous ammonia.目前正精品 精品 在研制一种新型的以无水氨作为动力的汽车。A pilot may have crossed so many time zones,and taken so many irregular breaks,that he himself does not know when natural night is.飞行员可能越过很多时区，无规律的休息过许多次，因此连他们自己也不知道什么时候是他们的自然夜间。（when 引导宾语从句）A polymer is a substance of high molecular weight,well above the size of the compounds considered so far.聚合物是一种高分子的物质，其大小远远超出迄今所提到的各种化合物。A port is a harbor with the necessary terminal facilities to speed up the moving of cargo and passengers.港口是船只停泊处，有各种必要的终端设备以加速客货流通。A power reactor has no need of air,for the heat generated in the uranium pile is the result of unclear fission,not of combustion.动力反应堆不需要空气，因为在铀堆中产生的热室核裂变而不是燃烧的结果。A second panel that will visuslly display any alarm condition in the building can be provided in the Mechanical System Control Office.机械系统控制办公室有另一个仪表板，将清楚地显示楼内的任何险情。A special fund has been set up to help these nations use new chemicals and technology.已经建立了特殊基金资助这些国家使用新的化学品和新技术。A substance which consists entirely of the same kind of atoms is called an element.精品 精品 完全由同一种原子构成的物质称为元素。A valuable instrument may be damaged beyond repair in a few second of carelessness.由于疏忽大意，重要的仪表可在几秒之内被损坏到无法修复的程度。A wave model is considered as a good model of the way in which light behaves.波动模型是说明光的性能的一个很好的模型。（省译了 is considered）A wider range of monitor sizes is sought after than ever before.与以前相比，人们追求更大范围的不同的显示器尺寸。About 20 kilometers thick,this giant umbrella is made up of a layer of ozone gas.地球的这一巨型保护伞由一层臭氧组成，其厚度约为 20 公里。According to the periodic table,there seem to be still some elements undiscovered.根据周期表，似乎还有一些未被发现的元素。Acid rain,ozone,and other consequences of these pollutants are affecting plant and animal life.酸雨、臭氧和这些污染引起的其他后果正影响着植物和动物的生存。Administrative personnel should be mathematically informed if they are to make wise decision.管理人员要做出明智的决策，就应该懂得数学。Adverse to iron,mercury is in a liquid state at ordinary temperature.水银与铁不同，在常温下是液态。（省译了 in）Aerodynamics is my field of research.我的研究领域是空气动力学。（主表倒译）精品 精品 After all its merits,the alloy does not measure up to the requirements.这种合金尽管有许多优点，但还是不符合要求。After the spring has been closed to its solid height,the compressive force is removed.弹簧被压缩到并紧高度之后，就没有压力了。After the war much of this knowledge was poured into the developing of the computers.战后，这项知识大量地应用于研制计算机。All mater,solid,gaseous or liquid,is made up of extremely tiny particles called molecules.一切物质，不论是固态，气态还是液态都是由及其微小的叫做分子的粒子所构成的。All of the charges resided on the surface of the conductor.全部电荷都分布在道题表面。All of the information necessary to build a whole organism resides within a single cell.成长为整个生物体所需的全部信息都存在于一个细胞内。All that can be done is to convert energy from one form into another.只能把能量从一种形式转变成另一种形式。All that we know as vitamins,and hormones as well as deadly poisons are all sort of organic chemicals.我们所熟知的维生素、荷尔蒙以及致命毒药都是有机化学物质。All the sounds are fed into a computer and analyzed.把所有的声音输进计算机进行分析。精品 精品 All these factors play akey role in formulation of the model.在拟定模型时，所有这些因素都将起到关键性的作用。Allowance,which is sometimes confused with tolerance,has an altogether different meaning.“余量”尽管有时和“公差”这个词相混淆，但“余量”这个词却有着完全不同的含义。（非限制性定语从句转译为让步状语从句）Although the problem is complicated,an approximation may be obtained by determining the qualitative and quantitative composition of substances.虽然问题比较复杂，单双通过定性、定量地测定物质的成分，则可以近似求解。Aluminum is a light,malleable and ductile metal.铝是一种重量轻，可锻造，延展性好的金属。An engine that converts heat energy into mechanical work is called a heat engine.把热能转变为机械功的发动机称为热力发动机。An entire disk pack might hold around 300 million bytes or characters.一个整磁盘可能容纳大约 3 亿个字节或字符。An increase in final velocity is attainable by means of the multistage rocket.最终速度的增加可借助多级火箭达到。An increase in the oxygen content of coal by 1 percent reduces the calorific value by about 1.7 percent.煤的含氧量每增加 1%，其热值则下降约 1.7%。An insufficient supply of air will prevent complete combustion.空气供应不足将会妨碍完全燃烧。精品 精品 Any resistor stores some energy in its magnetic field.任何一个电阻器都能够把一部分能量储存于磁场中。As a result,computer have become smaller,faster,and cheaper.其结果是计算机变得体积小。速度快，价格便宜。As described above,the laser beam is much more powerful than other light beams.如上所述，激光束比其他光束要强烈的多。As far as a whole is concerned,the body is electrically neutral,when the total number of protons equals the total number of electrons.当质子总数等于电子的总数时，这个物体就整体而言是电中性。As far as the image goes,the electron microscope is analogous to the ordinary optical microscope.电子显微镜就成像而论，与普通光学显微镜相似。As he is a skillful operator,he would work on both the boiler and turbo-generator.作为熟练的操作人员，他应当能够运行蒸汽炉和涡轮式发电机。As is noted in the preceding section,two essential elements of any computer are a memory and a processor.正如前一节指出的那样，任何计算机的两个基本单元是储存器和处理器。As is very natural,a body at rest will not move unless it is acted upon by a force.静止的物体没有外力作用，就不会移动，这是很自然的。As soon as用来引导时间状语从句，可译为“一就”、“一旦就”等。如：精品 精品 As the nature of the soil often varies considerably on the same construction site,the capacity of the soil to support loads also varies.即便在同一施工现场，由于地基的性质有很大差异，土体的承载力也不相同。As the speed of neutrons is reduced,they become thermal neutrons.由于中子减速，它们变为热中子。As we have mentioned above,coal production and use is accompanied by serious environmental problems.正如我们上面所提到的，煤炭的生产和使用伴随有严重的环境（污染）问题。As 引导的比较从句很多情况下不能按以上的固定格式翻译，经常要根据需要灵活翻译。如：At any point in time the slave computer is mirroring the processing of master computer.从属计算机随时都在反应主计算机的处理过程。At the same time,the infant mortality was 40 percent lower than that of the 1960.同时，婴儿的死亡率比 1960 年降低了 40%。At this critical temperature,changes begin to take place in the molecular structure of the metal.在这种临界温度时，金属的分子结构开始发生变化。（译为主语）Atomic power stations need very large amounts of water to continually remove unwanted beat.核电站需要大量的水来不断派出废热。Automatic machines,having many advantages,can only do the jobs they have been told to do.自动化机器虽然有很多优点，但它们只能干人们吩咐它们要干的精品 精品 事。（译为让步状语从句）Automation is not the same thing as mechanization.自动化和机械化不是一回事。Because each gene has its unique sequence of difference DNA subunits,the precise sequence can be registered.因为每个基因的不同的 DNA 副族都有自己的独特的序列，这一精确的序列可以注册。Because of its simplicity,economy,and durability,the induction motor is move widely used for industrial purposes than any other type of a.c.motor,especially if a high-speed drive is desired.与其他型号的交流电机相比，感应电动机因其简单、经济和耐用而被更广泛地用于工业，特别是需要告诉驱动时更是如此。Before sunshine can be used as a source of energy the storage problem must be solved.只有解决了贮存问题，阳光才能用作能源。Before the air enters the turbine,fuel is sprayed into it.在空气进入涡轮之前，燃料就喷进去了。Being cheap and effective makes 2.4-D a very popular weed killer.因为价格便宜效力高，2.4-D 成为深受欢迎的除草剂。（作主语的动名词短语译为原因状语，宾语转译为主语）Being ever bulky,the sun does not look larger than the moon from the earth.虽然太阳体积如此之大，但从地球上看它并不比月球大。Being special in structure,these compounds have a special property,namely the 精品 精品 interfacial activity.由于结构特殊，这些化合物具有一个特殊性质，即界面活性。Besides food and blankets,they had mules,picks and pans.除了带食物和毯子之外，他们还牵着骡子，扛着铁锹，带着淘金盘。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，因为眼睛肿的视锥细胞数量极少或根本没有，所以不能辨别颜色。（第二个引导定语从句的关系代词 which 转译成“因为”，表示原因）Black holes act like huge drains in the universe.黑洞的作用像宇宙中巨大的吸管。Black holes show us a world which operates in a totally different way from our own and they question our most basic experience of space and time.黑洞向我们展示出一个运动规律与我们这个世界完全不同的世界，它使我们对关于空间和时间的最基本经验产生怀疑。Breeding of hummingbirds takes?place in May and June.蜂鸟生育繁殖的时间是每年的五月和六月。Bubble memories are not expensive,consume little power,are small in size,and are highly reliable.磁泡存储器价格不高，电能消耗少，体积小，可靠性高。But for the ozone layer,more people would get sunburns,skin cancer and cataracts.如果没有臭氧层，许多人就会患上晒斑、皮肤癌、白内障等疾病。But that iron were brittle,it would have been possible to forge it.要是铸铁不是脆的，便可以锻造。精品 精品 But that you cut the engine immediately,it would have burned out.假使你不及时关掉发动机，那么发动机早就坏了。By conductivity we mean the ability to conduct an electric current.导电性就是指传导电流的能力。By convention an atom of an element is represented by an abbreviation of the elements name.按照惯例，一种元素的原子由该元素名称的缩写来表示。By itself,concrete is only good at resisting compression,but it fails under tension.混凝土本身只能抗压，不能抗拉。（省译可 under）By repeated recrystallization a protein usually can be rendered essentially pure,in the sense of being free from other proteins.在不掺杂其他蛋白质这个意义上，通过反复再结晶，可以得到基本上纯净的蛋白质。（动名词短语被译为条件状语）By that time,the radioactive cloud had thinned out to such an extent that it was no longer visible.到那时，放射性云已稀薄到再也看不见的程度了。Carbon burns in oxygen or air,forming carbon dioxide.碳在氧或空气中燃烧，便形成了二氧化碳。Carbon dioxide does not burn and support combustion.二氧化碳既不自然，也不助燃。Care must be exercised to prevent thermal strains from introducing spurious output.必须注意防止热应变引起乱真输出。（译为谓语）精品 精品 Cars will be driven by ceramic motors twice as light as that of their steel counterparts.汽车将采用陶瓷发动机，重量仅为钢制发动机的一半。cautious,able,familiar,available 等。如：Certain sweat glands emit a distinctive odor when an animal is frightened.动物受惊吓时，某些汗腺会放出独特的气味。Chemical control will do most of things in pest control.化学防治能在病虫害防治中起到主要作用。Computers are of great help to scientists and engineers;that is why they are widely used in different branches of science and engineering.计算机对科学家和工程技术人员是非常有用的，这就是计算机被广泛应用于科学和工程各个领域的原因。Computes come in a wide variety of sizes and capabilities.计算机大小不一，能力各异。Consider a situation in which a certain part can be manufactured at the rate of 50 parts a day on an automatic screw machine.假定在自动螺丝车床上加工每一零件的生产率为每天 50 件。Consumers can work by throwing out data unimportant to the overall quality of the image.压缩程序能删除那些对图像整体质量无足轻重的数据。（省译了原来的谓语，动名词被转译成谓语）精品 精品 Contact between copper and aluminum sets up corrosive action.铜与铝的接触引起腐蚀作用。Crystal making did not become a serious business until 1902.直到 1902 年,晶体制造才成为一个重要的行业.Curiously,Uranus has almost no such excess heat.奇怪的是天王星几乎没有这种多余的热量。Defects in welds,if any,can be detected by nondestructive testing methods.焊缝内如有缺陷，可用无损检验法探查。Depressing pumps provide an ideal for chemical applications.压缩泵是化工应用的理想设备。Design should incorporate provisions to avoid accidental collapse of a bed.在设计中要有各种预备措施以避免床层的意外崩塌。Despite all the improvements,rubbers still has a number of limitations.尽管改进了很多，但合成橡胶仍有一些缺陷。Deviced minaturization results in reduced cost and in improved performance.器件微小型化可使成本下降、性能改善。Different kinds of petroleum are all mixtures of hydrocarbons.各种石油产品都是烃混合物。精品 精品 Differentiation can also be expressed in terms of biochemical activities.分化也可以用生化活动来表达。Distillation involves heating the solution until water evaporates,and then condensing the vapor.蒸馏就是要把溶液加热，直到水蒸发，然后再使蒸汽冷凝。Each organism owes its existence to genes it contains.每个生物有机体因其含有基因而存在。（译为谓语）Each transistor in the box is not out of order.盒里的晶体管并非每一个都是坏的。Einstein came to the conclusion that the maximum speed possible in the universe is that of light.爱因斯坦得出这样的结论，即宇宙中的最大速度是光速。Einstein claimed that matter and energy are interchangeable，so that there is no“absolute”time and space。爱因斯坦宣称物质和能量可以相互转换，因此没有“绝对的”时间和空间。Einsteins relativity theory is the only one which can explain such phenomena.爱因斯坦的相对论是解释这种现象的唯一理论。（直译）Electric charges,positive and negative,which are responsible for electrical force,can wipe one another out and disappear.产生电场力的正负电荷会相互抵消掉。（省译了 and）Electric light,electric heat and electric driving power can be produced without dirt 精品 精品 or noise where they are needed,and can be quickly and easily controlled.电力照明、电热以及电动力的供应没有灰尘和噪音，随处都能使用，并且能迅速容易地控制。Electrical energy is available from a simple cell.就从一节电池中便可得到电能。Energy is stored in it as a spring is compressed or stretched.当弹簧被压缩或拽长时，能量便储存在弹簧上。Engine revolution should not exceed the maximum permissible.发动机的转数不应超过所允许的最大数值。Engineering,while not a basic science,draws heavily upon the scientific disciplines when it goes to any practical field.虽然工程学不是一门基础科学，但是当它应用于任何一个世纪领域时，都会大量的使用许多学科的知识。Even if we live in a temperate climate,a day may come when it rains or snows all the time.即使我们生活在温带地区，也可能会遇到一整天下雨或整天下雪的一天。Even the protective environment is no insurance against death from lack of oxygen.即使有防护设施，也不能保证因缺氧而死亡的情况。Even though the copper wire looks quite motionless to your ordinary eye,there is a great deal of activity going on inside it.尽管从肉眼看来铜线是不动的，但它在内部却进行着大量的活动。精品 精品 Every object,large or small,has a tendency to move toward every other object.每一个物体，不论大小，都有向其他物体移动的倾向。Every organism id structurally isolated from its environment by some kind of covering such as a shell,a skin or a membrane.每一个生物体都以某种覆盖物，如壳体，皮肤或膜，使其与外界隔开来。Evidently diffraction,as well as interference,is a wave property.显然，衍射以及干涉都是波的特性。Excess adhesive shall be carefully removed to prevent running to other surfaces.擦去多余的粘结剂要格外的小心，以免流到其他表面上。（动名词作动词宾语）Explosive hardening procedures take up where heat treatments leave off.不用热处理的地方，可采用爆炸硬化法。Failure can be prevented by ensuring that all wiring is properly insulated.防止这种事故的办法是保证使导线完全绝缘。Far from increasing the reaction rate,high temperatures decrease it.高温非但没有提高反应速率，反而降低速率 Fast feeds produce large,thick chips.快速进给产生大而厚的切屑。Few birds remain throughout the year in the place where food is hard t