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1、 练习1II冠词1. Dr. Emmet graduated from Harvard University in 2001.（Emmet博士2001年毕业于哈弗大学）2. Professor Li earned his Ph.D. degree in mechanical engineering from the Xian University of Technology in 1988.（李教授1998年在西安理工大学获得机械工程博士学位）3. Now we shall turn to the discussion of local area networks.（现在我们转向（turn t
2、o）讨论一下局域网）4. The Bainbridge mass spectrometer is as important an instrument as the optical spectrometer.（质谱仪是及光谱仪一样重要的仪器）5. How long a time 或How much time is required to this experiment?（做这个实验需要多长时间？）6. An increase in pressure always causes a decrease in volume.（压力的增加总会引起体积的减少）7. Fig. (2-5) shows wh
3、at is expressed by Eq. (2-2).（图（2-5）画出了式（2-2）所表示的情况）8. The unit of inductance is the henry.（电感的单位是亨利）III、改错1. The UASMA protocol employs a unique frame structure.（UASMA协议采用了独特的帧结构）2. Finally, a broad stepped impedance transformer is designed by this method.（最后，用这种方法设计了宽带阶梯阻抗变换器）3. Dynamic analysis a
4、nd evaluation of the security of a proactive secret sharing system（先应秘密共享系统安全性的动态分析和评估）4. The approach can be applied to the one-dimensional potential barrier with an arbitrary profile.（该方法适用于任意形状的一维势垒）5. We propose a numerical method based on Newtons iterative method.（我们提出了一种基于牛顿地带发的数值方法） 练习21. Thi
5、s circuit consists of a battery, an inductor and a capacitor.（该电路是由一个电池、一个电感器和一个电容器组成）2. Compute the electric fields at points a, b, and c.（试计算在a、b、c三点处的电场。）3. This satellite is used for communications between the United States and Great Britain, France and Italy.（这颗卫星用于美国及英国、法国、意大利之间的通讯）4. We assum
6、e that the antenna is vertical and that its loss is zero.（我们假设该天线是垂直的，并且其损耗为0）5. Chapters 6, 7, and 8 deal with transmission lines.（第6、7、8章论述传输线）II、将下列句子译成英语，注意正确使用数词1. Its error is six parts in 1012.（其误差为千亿分之六）2. This computer stores four times more information than that one (does).（这台计算机存储的信息比那台多3
7、倍）3. The demand for this kind of equipment in the near future will be 20 times what it is.（不久的将来对这种设备的需求量是现在的20倍）4. The voltage across this component is a few tenths of a volt.（这个元件上的电压为零点几伏特）5. Now its internal pressure is one sixteenth what it was.（现在其内部压力是原来的十六分之一）III、改错1. This object is over fiv
8、e times heavier than that one is.（这个物体比那个物体重4倍多）2. Unless otherwise stated, it is assumed that silicon transistors are used and that ICBO can be neglected.（除非另有说明，我们假设使用的是硅管、ICBO可以忽略不计）3. This circuit has the advantages of simple structure and easy adjustment.（这个电路的优点是结构简单、容易调整）4. Figs. 1, 2, and 3
9、show this process in detail.（图1、2、3详细地画出了这个过程）5. For further information, consult references 3, 5, 9.（对于进一步信息，参见文献3、5、9） 练习3I、将下列句子译成英语，注意正确使用介词 1. This new type of computer has many advantages over the general type.（这种新型计算机及普通计算机相比有许多优点）2. It is not difficult to solve this differential equation for
10、 the unknown quantity.（解这个微分方程把未知量求出来并不难） 3. Of these five new chapters, the first one deals with the basic principles of negative feedback.（在这新的五章中，第一章论述负反馈的基本原理）4. At this point/time, current differs in phase from voltage by 90o.（这时，电流及电压相位（phase）相差90）5. By analyzing By the analysis of the paramet
11、ers of the instrument, we can understand its performance.（通过分析该仪器的参数，我们就能了解它的性能）6. We will find out its average velocity over this distance.（我们要求出它在这一距离上的平均速度）7. The science of electronics is too important in the world today. （电子学这门科学在现今世界太重要了）8. They solved this problem with great difficulty.（他们极为困
12、难的解出了这道题）II、画线部分用介词短语表示 1. For x1, there is no solution to this equation this equation has no solution.2. Upon On substituting substitution of these values into in the equation, we obtained the following expression.（在把这些代数带入该方程后，我们得到了下面的表达式）3. This circuit is similar in operation to that of Fig. 1-1
13、0.（这个电路的工作情况类似于图1-10 的电路）4. This computer is very good in performance.（这台计算机的性能很好） 5. These waves travel only in one direction.（这些波只向一个方向传播）III、 改错 1. This paper presents a new method for the recognition of radar targets.（本文提出了雷达目标的一种新的识别方法）2. The influence of the moving state of the target on the t
14、racking accuracy of the EKF is great.（目标的运动状态对EKF的跟踪精度影响是非常大的）3. Another comsat was launched on the morning of the 8th of October.（在10月8日早上又发射了一颗通信卫星）4. Voltage is measured in volts.（电压时用伏特来度量的）5. They will leave for Beijing to attend an international conference on mobile communication.（他们将赴北京参加移动通信
15、国际会议） 练习4 1. The force acts perpendicular to the surface of the table.（该力垂直于桌面作用）2. The three coefficients here remains to be determined.（这里的三个系数有待于确定）3. The two equations below will be often (frequently) used in later chapters/in the chapters which follow.（下面的两个式子在后面几章将会经常用到）4. Here we use two meta
16、l balls 10 cm apart.（这里我们使用相距10厘米的两个金属球）5. The output remains/stays constant/unchanged/fixed/unaltered/the same. （输出保持不变） 6. All the textbooks available discuss this problem.（现有的教科书均讨论了这一问题）7. Accurate in operation and high in speed, computers have found wide applications.（计算机由于运算准确、速度快而得到了广泛的应用）8.
17、The answer to this problem looks correct.（这个题的答案看起来是正确的） 9. Two parallel wires a distance (of)apart carry the current i.（两根相距为的平行导线有电流i） 10. The problem now is how to measure the voltage across this component.（现在的问题是如何测量这个元件上的电压） 11. These data will be sent to the computing center 2 kilometers away.
18、（这些数据将传送到2千米外的计算中心） 12. Upon rearranging the equation above, we have get, obtain the following expression.（对上面的那个方程整理之后，我们得到下面的表达式） 13. These charges can interact with other charges present.（这些电荷能及存在的其他电荷相互作用） 14. Forces can be transmitted without contact, contrary to the common belief.（力可以没有接触而传递，这
19、及普通的观念相反） 15. This coefficient is typically 0.35.（这个系数的典型值为0.35）II、改错1. In this case, the input does not fall; nor neither does the output. ; the output does not fall, either.（在这种情况下。输入并不下降，输出也不下降）2. The resistance of a conductor depends not only on the material of which the conductor is made, but a
20、lso on the size and temperature of the conductor.（导体的电阻不仅取决于制成导体的材料，而且取决于导体的尺寸和温度）3. These scientists are very interested in this topic.（这些科学家们对该论题很感兴趣）4. This parameter can hardly be measured.（这个参数几乎不能测出来）5. In this laboratory, this instrument is more expensive than any other one/ any one else.（在这个
21、实验中，这台仪器比其他任何一台都贵）6. The features of this device are small size and light weight.（该设备的特点使体积小、重量轻） 练习5I、画线部分用短语表示 1. This equation can be solved in either of the following two ways/the two ways which follow.（这个方程我们可以用以下两种方法的任何一种来求解）2. This baseball will soon come to rest because of its interaction wi
22、th the ground.（这个棒球不久会停下来，是因为它及地面相互作用的缘故）3. Our choice of this coefficient as 1 is correct.（我们把这个系数选为1是正确的）4. From its definition as the ratio of a force to a length, we can see that k has the same unit as work (does).（从把它定义为力及长度之比，我们可以看出k具有及功相同的单位） 5. Our analysis of the machine is of great signifi
23、cance.（我们对该机器的分析是很有意义的） 6. This facilitates their use in circuit analysis.（这有助于把他们用在电路分析中）II、画线部分用名词或名词短语表示1. This police car is equipped with a receiver the size of a matchbox. （这辆警车装备了像火柴盒那样大小的接收机）2. Wires one hundredth the diameter of a silk thread are used to connect these components. （人们使用一根丝线（
24、silk thread）的百分之一那样粗细（diameter）的导线（wire）来连接这些部件）3. We must water cool these equipments/devices. （我们必须对这些设备进行水冷却）4. In the past, telephone calls were operator connected.（在过去， 是靠接线员（operator）来连接的）5. AC can be changed/turned/converted/transformed/translated into/to DC, a process called/known as/referre
25、d to as rectification.（交流电可以被转换成直流电，这一过程被称为整流（rectification）6. A magnet attracts iron materials, a familiar phenomenon.（磁铁（magnet）能吸引铁质材料（iron material），这是大家熟悉的现象） 7. Computers are capable of processing information, a process that previously could be accomplished only inside our heads.（计算机能够处理信息，而这一
26、过程以前只能在我们头脑里完成） 8. An instrument for measuring current, voltage, and resistance, the multimeter is widely used in electrical engineering.（万用表是测量电流、电压、电阻的仪表，它广泛的用在电器工程中）III、翻译1. Secs. 1.1 and 1.2 will discuss several other problems.（在1.1和1.2节将讨论其它几个问题，sec.）2. Problems are listed/given on pp. 1-5.（习题列
27、在第1-5页上）3. In the equations above, all hs are the hybrid parameters.（在上面的几个式子中，所有的h都是混合参数）4. The mass of the standard pound is equal to 0.4535924277 kilograms.（标准磅的质量等于0.4535924277千克）5. All as and bs in Eq. (5-1) are related to the impedance Ro.（式5-1中所有的a和b都及阻抗R0有关）6. We must take the effect of temp
28、erature on upon semiconductors into account.（我们必须把温度对半导体的影响考虑进去）7. In this case, the variation of output with input is very small.（在这种情况下，输出随输入的变化是很小的）8. This curve shows the dependence of distance on/upon speed. （这一曲线表示出了距离对于速度的依从关系）IV、改错1. None of them can solve this special type of differential e
29、quation.（他们都不会解这类特殊的微分方程）2. They do not know whether this material can stand so large a force or not.（他们不知道这材料能否承受这么大的力）3. There are M polygons altogether, each of which has N vertexes.（共有M个多边形，其每个顶点数均为N）4. These two engineers are busy (in) designing a new kind of software.（这两位工程师在忙于设计一种新的软件）5. Iron
30、 is almost as good a conductor as aluminum.（铁的导电性能几乎及铝一样好） 练习6I、画线部分用插入语表示1. This image, it will be noticed, is a real image.（人们将会注意到，这个像是个实像）2. This technical problem, we hope, will be solved soon.（我们希望，这个技术问题不久就会解决）3. 210 is approximately 1000, a fact that we think is very useful in the study of d
31、igital electronics.（210近似为1000，这一点我们认为在学习数字电子学中是很有用的）4. A resistor of say 100 ohms should be used here.（这里应该使用一个比如说100欧姆的电阻器）II、翻译，正确表达否定和时态 1. None of those textbooks have/has mentioned this point.（那些教科书均没有提到这一点）2. All of these x values cannot satisfy the equation.（这些x值并非都能满足该方程）3. Neither of the t
32、wo conditions is satisfied here.（那两个条件在此都没有得到满足）4. In the preceding/previous chapter, we discussed all kinds of force.（在前一章，我们讨论了能量）5. This paper describes a new method for designing aircraft.（本文论述了设计飞机的一种新方法）6. By the end of the last century, the company had manufactured 5 000 radars.（到上个世纪末，该公司已经制
33、造了5000部雷达） 7. Since 2008, this research institute has been developing a special kind of robot.（自从2008年以来，这个研究所一直在开发一种特殊的机器人）III、翻译 正确使用被动句 1. In Section 1-2, the concept of force was introduced.（在1.2节介绍了力的概念）2. As early as the 1940s, it was found that semiconductors are very useful. （早在20世纪40年代，人们发现
34、半导体是非常有用的）3. This result can also be arrived at in another way.（这一结果也能用另一种方法来获得(arrive at)）4. At that time no use was made of this phenomenon/, this phenomenon was made no use of.（当时人们没有使用（make use of）这一现象）5. This point will be dealt with in the next section.（这一点将在下一章讨论（deal with）IV、翻译，正确使用表示比较的句型 1
35、. This computer works much better than that one (does)/This computer is much better in performance than that one (is).（这台计算机的性能比那台好得多）2. This computer requires many more components than that one (does).（这台计算机所需的元件数比那台多得多）3. The distance of the moon from the earth is as great as 240 000 miles.（月亮离地球的
36、距离远达24万英里）4. The greater the resistance, the longer time it takes for the capacitor to reach its maximum voltage/, the longer time is required for the capacitor to reach its maximum voltage.)（电阻（resistance）越大，电容器（capacitor）达到其最大电压（voltage）所需的时间越长） 5. The current as small as 0.1 A cannot produce enou
37、gh heat.（小达0.1A的电流不能产生足够的热量）V、改错 1. It is easy for us to determine the weight of the body. 或：We can determine the weight of the body easily.（我们容易确定该物体的质量）2. The two engineers are busy (in) designing a new type of computer.（这两位工程师忙于设计一种新的计算机）3. We find this concept very difficult to explain.（我们发现这个概念
38、很难解释）4. None of these windows can withstand so large a force.（这些窗户均承受不了这么大的力）5. Work equals is equal to force multiplied by/times distance.（功等于力乘以距离） 6. The results obtained agree with the experimental values. are in agreement with the experimental values.（所得结果及实验数值想吻合） 练习7I、画线部分使用不定式 1. It will tak
39、e a few months to design this kind of aircraft with the help of a computer.（借助计算机设计这种飞机只需要几个月的时间） 2. It is left as a problem to for the reader to show that this expression holds.（证明（show）这个表达式成立（hold）就留作读者的一个练习） 3. The program to be executed is stored in this unit.（要执行（execute）的程序存储在这一单元中） 4. This v
40、alley acts as the foundation on which to build the dam.（这山谷（valley）用作为建坝（dam）的基础（foundation） 5. In this laboratory there are many kinds of instrument for students to choose from.（这实验中有许多种仪表供学生选择） 6. Let t0 equal/be equal to zero.（设（let）t0等于零） 7. The farther away the target (is), the longer time it t
41、akes for the echo to return.（目标离得越远，回波（echo）返回所需的时间久越长） 8. For the series to converge, x must be less than 1.（为使该级数（series）收敛（converge），x必须小于1） 9. We find this concept very difficult to understand.（我们发现这个概念很难理解） 10. This method makes it much easier to detect targets.（这方法使得检测（detect）目标容易得多了） 11. This
42、 factor will affect the ability of a computer to store information.（这个因素会影响计算机存储信息的能力） 12. We have to find out how large to make r so as for the series to converge.（我们得求出使r为多大时才能使该级数收敛） 13. This is a pen to draw pictures with.（这是画画所用的笔） 14. Elasticity is the tendency of a body to return to its origi
43、nal condition after being deformed.（弹性（elasticity）是物体变形（deform）后能恢复（return to）原状的趋势） 15. Ordinary matter is said to be electrically neutral.（普通物质被说成是电中性的（electrically neutral） 16.This property makes it possible for metals to be made into any shape.（这一性质使得金属能被做成任何的形状） 17. This table is unfit for a st
44、udent to do experiments on.（这张桌子不适宜学生做实验） 18. Now we consider what path of integration to take.（现在我们考虑取什么样的积分路径（path of integration）II、改错 1. The sine law of the variation of light intensity with the cylinder diameter has been emphasized.（强调指出了光强随圆柱体直径变化的正弦规律） 2. Not only do temperature and light aff
45、ect the conductivity, but the addition of impurities to semiconductors also makes it change greatly.（不仅温度和光影响导电率，而且给半导体加杂志也会使导电率变化很大） 3. Various satellites are frequently launched to obtain information about/on space.（人们经常发射各种卫星来获得有关太空的信息） 4. Our semiconductor industry came into being at the end of
46、the 1950s.（我们的半导体工业是在20世纪50年代形成的） 5. My colleagues and I would like to express our thanks to Professor W. Smith for his great help.（我和我的同事们愿对w.史密斯教授给予我们的大力帮助表示感谢） 练习8I、画线部分使用分词或分词短语 1. The amplifier amplifies the received signals.（该放大器（amplifier）放大（amplify）接收到的信号） 2. Moving molecules have kinetic en
47、ergy.（运动的分子（molecule）具有动能（kinetic energy） 3. Speed equals distance divided by time.（速度等于距离除以时间） 4. Voltage equals/（is equal to） current multiplied by resistance. （电压等于电流乘以电阻） 5. The resistance of air increases with the increased/increasing/an increase in speed.（空气阻力随速度的增加而增加） 6. A transformer is a device consisting of two or more coils wound on/round an iron core.（变压器（transformer）是由绕（wind）在铁芯（iron core）上的两个或多个线圈（coil）组成的一种装置） 7. It is necessary to find out the current flowing t