✧过去五年是国家面貌日新月异，各项事业蒸蒸日上的五年。→
The past five years saw our country under great changes with each
passing days, as it endeavor‟s flourished.
✧在他面前大谈股票，那简直是班门弄斧。
If you talk much of stock before him, that will be like showing off one‟s proficiency with axe before LuBan ＿the master carpenter.
✧“Words do not have meanings; people have meaning for words.”
词本无义，义随人生
✧ While small generators frequently have revolving armatures, large
machines usually have stationary armatures and revolving fields.
小型发电机常采用旋转电枢，而大型发电机常采用静止电枢，旋转磁场.
✧Physics studies force, motion, heat, light, sound, electricity,
magnetism, radiation, and atomic structure.
物理学研究力、运动、热、光、声、电、磁、辐射和原子结构。The igniter combustion often produces hot condend particles.
----这种点剂燃烧常常产生热的凝结颗粒。
The outcome of a test is not always predictable.
----试验的结果并不总是可以预料的。
✧Resistors are available either in fixed values or variable values.
----电阻器有固定（电阻器）和可变（电阻器）两种。
We can get more current from cells connected in parallel.
----电池并联时提供的电流更大。
The law of reflection holds good for all surfaces.
----反射定律对一切表面都适用。
✧Leaves are to the plant what lungs are to the animal.
----植物叶子的作用好比动物的肺一样。
There are some metals which posss the power to conduct electricity and ability to be magnetized.----某些金属具有导电和被磁化的能
力。
Pollen tube is defined as the tube throuth which pollen pass into the ovary----花粉管定义为花粉进入子房的管道。
✧With the same number of protons, all nuclei of a given element may
have different numbers of neutrons.----虽然某个元素的所有原子核都含有相同数目的质子，但它们含有的中子数可以不同。
Self-lubrication can also be obtained with plastic bearings which also provide freedom from corrosion and quiet operation.
塑料轴承其材质本身顺滑，而且塑料轴承耐腐蚀，运转噪声小。
A brief summary of the gas generation schemes facilitates the DR
process descriptions.----为了更清楚地阐述直接还原工艺过程，我们对气体产生的工艺流程也进行了简单介绍。
✧The nylon nut must not protrude above the metal surface.
----尼龙螺母不应该高出金属表面。
The sodium silicate makes the cork stick to the mold surface.---硅酸钠能使软木粉粘在磨具表面。
Space programmers demand tremendous quantities of liquid hydrogen and oxygen as rocket fuel.航天计划需要大量的液氢和液氧作为火箭燃料。
✧Thus the bending stress is very easily computed.
因此，很容易计算出其弯曲应力。
Too large a current must not be ud.----不得使用过大的电流。
The conver effect is the cooling of a gas when it expands.
气体在膨胀时对其冷却是一种逆反应。
Either or both windings may be excited by alternating or direct current. 可用交流电或者直流电激励其中任何一个或者两个绕组。
✧ Lar has the applicability to many fields of science and the
adaptability to practical us. [具有动作意义]
激光可应用于许多科学领域，也适合于各种实际用途
✧This kind of pipes can be ud for carrying air, gas water etc [动名
词] 这种管子可以用来输送空气，煤气和水.
✧He was our good supporter [-or /-er的动名词]
他很支持我们的方案.）
✧He had a good knowledge of chemistry. [名词为中心词的词组]
他精通化学）
✧ He found some difficulties to design a power plant without an
electronic computer.他感到没有电子计算机，要设计一座电厂是困难的.
✧The lower stretches of rivers show considerable variety.
河流下游的情况是大不相同的.）
✧ When the switch is off the electric circuit is open.
拉下开关，电路断开）
✧It is evident that there is something wrong with the TV t.
显然是电视机出了毛病.）
✧IPC is more reliable than common computer.
工控机的可靠性比普通计算机高.）
✧Glass is much more soluble than squats.
玻璃的可溶性比石英大得多.）
✧ A steady increa of load on a part will cau it to deform gradually. 不断地增加零件的负荷会使零件逐渐变形.
✧The modern world is experiencing rapid development of information
technique. 当今世界的信息技术正在迅速地发展.）
✧Coating thickness range from 1/10 to 2mm.
深层的厚度的范围为0.1到2毫米.
✧Neutrons act differently from protons.中子的作用不同于质子.
✧The earth on which we live is shaped like a ball .
我们居住的地球，其形状象个球.
✧The universal lathe is most widely ud and plays an important part in
industry.万能车床得到广泛应用，因在工业上起着重要的作用.
✧He routinely radioed another agent on the ground.
他与另一个执勤人员进行了例行的无线电联络.
✧Sodium is very active chemically.钠的化学反应性很强.
✧Such details must be dimensionally correct. 这类零件尺寸必须准确.
✧ Today chemical experiment is over.今天的化学实验结束了.
✧You may feel its electric charge flow through your body and away
into the earth.你会感到电流从你的身体流过，然后离开而进入地下.
✧Heat and light can be given off by the chemical change.
这种化学反应能放出光和热.
✧Test results of pure tungsten have been also included for comparison.
为了便于比较，其中包括了纯钨的试验结果.
✧ There are three main laws of mechanics, or three laws of Newton.
力学有三大定律，即牛顿的三大定律.
✧Care should be taken to protect the instrument from dust and dump.
应当注意保护仪器，避免灰尘和潮湿.
✧Attention is necessary to prevent the electronic instrument from
damaging.必须注意，以防电子仪器损坏.
✧The result of his revolutionary design is that the engine is much
smaller, works more smoothly, and has fewer moving parts.由于他在设计上的革新，发动机变得小多了，工作更平稳，活动部件也少了.
✧This article aims at discussing new developments in
componentmaterial and techniques.本文的目的在于讨论元件材料和元件技术的新发展.
✧Gold weight about twenty times as much as water.金子的比重约为
水的20倍.
✧Installing position of fu box is lected in an adequate place for
inspection.为了便于检查，选择的保险盒安装位置应当适当.
✧The landscape of the moon was en to have been mountain range and
craters great and small.看到月球表面部分有山脉和大大小小的火山口.
✧After more experiments, Galileo succeeded in making a much better
telescope.再经一些试验，枷利略成功地造出一架好得多的望远镜.
✧This controller is designed for remote controlled operation over a 25-
year period.按其设计，该遥控器的使用寿命为25年.
✧Matter is anything which occupies space.凡是占有空间的东西都是
物质.
✧This metal is less hard than that one.这种金属的硬度比那种差.
✧ a limited quantity of the reagents was available.
✧可利用的药剂数量是有限的.
✧In their laboratory few instruments are valuable.
✧在他们的实验室里，贵重的仪器不多.
✧the device is shown schematically in fig8.这种装置的简图如图8所
示.
✧There are three TV cameras in our school, each having its own
characteristics.我们学院有三台电视摄象机，每台有其各自的特点.
✧In Britain, the first stand-by gas turbine electricity generator was in
operation in Manchester in 1952.
英国的第一台辅助燃气轮发电机于1952年在曼彻斯特开始运行。
✧In this calculation, it made few mistakes.这次计算的错误不多.
✧Television has been successfully nt by lar too.
用激光发射电视也获得了成功.
✧ a transistor is a device controlling the flow of electricity in a circuit.
晶体管是控制电路中的电流的器件.
The movement of electrons is called electric current.
✧电子的运动称为电流.
The third ction of the fourth chapter deals with quantum statistical mechanics.第四章第三节讨论量子统计力学.
✧The high the speed, the high the efficiency.转速越高，效率越高.
✧The sun ris in the east, and ts in the west.
太阳朝出东海，夕落西山.
✧One can never be too careful in one‟s work,.工作越细致越好.
✧ A battery has within it some resistance called internal resistance.
电池内的电阻称为内阻.
✧It ems that the result of this test will be very important to us.
看来，这个试验结果对我们非常重要。
✧The experience have told is to us that this kind of material is of good
quality.经验告诉我们，这是一种优质材料。
✧Friction always manifests itlf as a force that oppos motion.
摩擦总是表现为一种阻碍运动的力.
✧The wings themlves are t on the fulage fairly far back.
机翼装在机身中很靠后的位置。
✧ The energy that has to be supplied by the generator in order to
overcome the opposition is transformed into heat within the conductor. 发电机为克服阻力所付出的能量在导体中转变为热能。
✧The rate at which the electricity flows is measured in amperes.
电流的大小用安培度量
✧On May cond he had an experiment on this kind circuit.
五月二号，他就这种电池做了一个实验.
✧At the part surface its temperature is about 6000℃
工件的表面温度约为6000℃
✧what is the difference between a moisture and a compound?
混合物与化合物的区别何在?
✧Everything in the laboratory must be kept in good order.
实验室里的每件物品必须保持整洁.
✧ Therefore the transformer can be ud to step up or step down
alternating voltage.因此变压器可用来升降交流电压.
✧In Fig8, A is the resistance, L the distance and C the effort.
在图8中，A为阻力，L为距离,C为作用力.
✧ A machine rotor has kinetic energy while it is t in motion.
运转的电机转子具有动能。
✧Unless there is voltage, there is no current.没有电压，就没有电流。
✧As the temperature increas, the volume of water becomes greater.
温度升高，水的体积就增大.
✧All you have to do is to press the button.只要一按电钮就可以了.
✧The result of the experiment is rather good.实验结果相当好.
✧Hence, television signals have a short range.因此，电视信号范围很窄.
✧Then came the development of the microcomputer.
后来，微型计算机发展起来了。
✧This method is them most widely ud method of P-N junction
formation in the fabrication of function electric blocks.在制造功能块时，最广泛使用的便是这种P-N结成方法.
✧The problem of the age of the earth is one problem we shall approach. 地球的年龄是我们将要探讨的问题.
✧Obviously, since this radiation is invisible, it is of no u to us for
illumination purpo.显然，由于这种辐射不产生可见光，因此不能用于照明.
✧To be sure, the change of the earth is slow but, nevertheless, it is
continuous.地球的确变化很慢，但它确定在不断变化.
✧As we know, electrons revolve about the nucleus, or center, of an
atom.众所周知，电子围绕着原子核旋转.
✧ The electric current flows through a conductor as if it were a fluid.
电流像流体般流过导体.
✧They float on the surface of the water and they give off light when
they are disturbed.它们在水面上漂浮，受到干扰时便放出光来。✧After a ries of experiments important phenomena have been
✧ascertained.经过一系列实验后，弄清了许多重要现象.
✧You must know the properties of the instrument before you u it.
在使用这种仪器前，必须弄清它的各种性能.
✧Solution to the heating problems of the electric machine was
ultimately found.电机发热问题的解决方法终于找到了.
✧From the evaporation of water people know that liquid can turn into
gass under certain conditions.从水的蒸发现象, 人们得知液体在一定的条件下能转化为气体.
✧Keep your eye on this new development.请你注意这个新发展情况.
✧You should do the experiment once more.
但应该把这个实验再重做一遍.
✧The three computers in our school are infected by virus.
我们实验的这三台计算机感染了病毒.
✧Like charges repel each other, but opposite charges attract(each other).
同性电荷相复排斥, 异性电荷相互吸引.
✧Water is the same substance whether (it is) in solid, liquid, or gaous
state.不论水处于固态，液态或者气态，它都是同一物质.
✧We suggest that the test (should) be done by 12 o‟clock.
我们建议这项实验应在12时前做完.
✧This ems (to be) a n important point.看来这是很重要的一点.
✧Being a good conductor, copper is generally ud to conduct
electricity.由于铜是一种导体，因此，一般要用来导电.
✧The pointer of the meter moves from zero to two and goes back to
zero again.表记的指针先从零指向二, 然后又回到零.
✧This electric motor is working in full under the action of heavy
current.在强电流的作用下，这台电机正以满载运行.
✧The solution is about to boil. 溶液马上就要沸腾了.
✧The frequency, wavelength, and speed of sound are cloly related.
✧声音的频率，波长和速度三者之间是密切相关的.
✧There are three basic ways of producing or storing electricity, by
generator, by battery, or by accumulator.电的生产和储存基本方法有三种: 一种是用发电机；一种是用电池；一种是用蓄电池.
✧Electricity becomes uful only after the nineteenth century.
✧When the machine is in operation, do keep away from it.
电器运转时，请勿靠近.
✧Calculate the unknowns in the following.试求出下面的未知数.
✧This chapter has clarified the relation between electric charges and
matter, and the nature of the forces that unite atoms and molecules
into solids.本章阐明了电荷与物质之间的关系，阐明了使原子和分子结合构成固体的力的作用.
✧We call this field of force the electric, or electrostatic field.
✧我们称这种力场为电场，或静电场.
