大学科技英语翻译

A body hat contains only atoms with the same general properties is called an element.物质如果包含的原子性质都相同，则称之为元素。

A color transmission contains the same information as a black and white transmission.彩色传输所容纳的信息，和黑白传输容纳的信息一样。

A data processer can issue address and function codes数据处理器能发出各种地址码和功能码。

A machine is just a mechanical device which makes it possible to do work more conveniently by changing the applied force in directions or in magnitude or both 机器只不过是这样的机械装置，它通过改变作用力的大小或方向，或既改变其大小又改变其方向的方法，使人们能够更加顺利地做工

A material balance is based on the law of conservation of matter.物质平衡是以物质守恒定律为基础的。

A new kind of computer –small, cheap, fine-is attracting increasing attention.一种新型的计算机越来越引起人们的注意—这种计算机体积小巧、价钱低廉、性能优越。

A transversely stressed fillet weld can sustain higher loads than one stressed longitudinally.受横向应力的角焊缝比受纵向应力的角焊缝承受能力强。

Air is a mixture of gases.空气是多种气体的混合物。

All isotopes cannot be manufactured in this way 并非所有的同位素都可以这样制造All metals do not conduct electricity equally well并非所有金属的导电性能都同样好

All structural materials behave plastically above their elastic range.超过弹性极限时，一切结构材料都会显示出可塑性。

All the chemical energy of the fuel is not converted into heat 并非燃料中的所有化学能都可转化为热

All these various losses, great as they are, do not in any way contradict the lay of conservation of energy所有这些各种各样的损失，虽然都很大，却并不都是和能量守恒定律矛盾的

An electric current begins to flow through a coil, which is connected across a charged condenser如果线圈同充电的电容器相连接，电流就开始流过线圈

An electric light bulb is a vacuum , and so is a radio tube电灯泡是真空的，电子管也是真空的。An engine may not always do work at its rated horse-power发动机并不总是以额定马力工作

An improved design of such a large tower must be achieved which results in more uniformed temperature distribution in it.这种大型塔的设计必须改进，已使塔内温度分布更均匀。

An oxidation number may be assigned to each atom in a substance by the application of simple rules.应用一些简单的规则，可以给一种物质里的各原子指定氧化值。

An understanding of laws of friction is important in the designing of modern machines.了解摩擦的规律对于现代机器的设计是重要的。

Another kind of rectifier consists of a large pear-shaped glass bulb from which all the air has been removed.另一种整流器由一个大的梨形玻璃泡构成，泡内的空气已全部抽空。

Arc welding is to make metals together by means of an electric current.电焊弧是利用电流将金属融合在一起。

As rubber prevents electricity from passing through it , it is used as insulating material.由于橡胶

不导电，所以用作绝缘材料。

Barely any of our present batteries would be satisfactory enough to drive the electric train fast and at a reasonable cost.我们现有的蓄电池几乎都不足以保证电气火车快速而经济高效的运行。

Being no cause to change the motion, a body can move uniformly and in a straight line.如果没有改变物体运动的原因，物体将匀速直线运动。

Better to do well than to say well.与其说的好不如做得好。

Both of the instruments are not precision ones这两台仪器并非都精密

Both of the substances are not made up of carbons这两种物质并非都是由碳组成的China‟s successful explosion of its first atom bom b caused tremendous repercussion of wealther map at a central meteorological station .创立科学理论的工作可以同在中心气象台制造气象图相比。

Chlorine is very active chemically.氯的化学性能很活跃。

Circuits breakers are necessary to deenergize equipment either for normal operation or on the occurrence of short circuits.无论在系统正常运行或发生短路时都需要使用断路器来断电。

Coating thickness ranges from 0.1 mm to 2 mm.涂层厚度范围为0.1到2毫米。

Conductors allow electricity to pass through more or less freely.导体可使电较为容易地流过。

Crystals do not melt until heated to a definite temperature,晶体要加热到一定温度才会融化。Day light comes from the sun,which is a mass of hot,glowing gas.日光来自太阳，太阳是一团炽热的发光的气体。

Digital oscilloscopes can not be often used in our experiments数字示波器不常用在我们的实验中

Earthquakes are closely related to faulting.地震与断层的产生有密切的关系。

Economic globalization has widened the gap between the North and the South and between the rich and the poor经济全球化使南北的发展差距、贫富差距进一步扩大

Electricity makes a motor run.电使电机运转。

Electronic computer having many advantages cannot carry out creative work and replace man.即使电子计算机有很多优点，它们也不能进行创造性工作，不能代替人。

For reasons the alternating current is more widely used than the direct current.由于种种原因，交流电比直流电用得更为广泛。

Forces can be classified as internal and external.里可以分为内力和外力两种。

Fuel cells are devices that when a fuel such as hydrogen or hydrogen-rich compounds and oxygen is supplied to materials arranged like the anode and cathode of a conventional battery,combine to convert chemical energy directly into electrical energy.燃料电池是这样一种装置：当供给氢（或富氢化合物）、氧反应物时，燃料点吃中的阴阳两极就会像普通蓄电池中阳极和阴极一样发生化学反应，将化学能直接转变为电能。Gases differ from solids in that the former have greater compressibility than the latter.气体和固体的区别在于前者比后者有更大的压缩性。

Gases,the molecules of which are widely separated from one another,have great compressibility than liquids.气体的分子互相之间距离很远，因而气体的可压缩性较液体大。

Gasoline is appreciably volatile.汽油具有很强的挥发性。