西电硕士专业英语阅读第二版答案.docx

1、西电硕士专业英语阅读第二版答案V、练习参考答案 练习11. 艾米特博士毕业Dr. Emmet graduated from Harvard University in 2001.2. 李教授1988理工大或机械博士Professor Li earned his Ph.D. degree in mechanical engineering from the Xian University of Technology in 1988.3. 现在转向讨论局域网Now we shall turn to the discussion of local area networks.4. 质谱仪光谱仪一样重

2、要The Bainbridge mass spectrometer is as important an instrument as the optical spectrometer.5. 做个试验要多长How long a time 或How much time is required to this experiment? The density of a substance is its mass per unit volume.压力增加体积减少6. An increase in pressure always causes a decrease in volume.图画出了2-2的情况

3、7. Fig. (2-5) shows what is expressed by Eq. (2-2).电感的单位是亨利8. The unit of inductance is the henry. 练习2该电路由一个电池电感器电容器组成1. This circuit consists of a battery, an inductor and a capacitor.试计算在abc三点处的电场2. Compute the electric fields at points a, b, and c.3.这颗卫星用于美国与英国法国意大利的通讯 This satellite is used for

4、communications between the United States and Great Britain, France and Italy.4. 我们假设该天线是垂直的且其损耗为零We assume that the antenna is vertical and that its loss is zero.5. 第678章论述传输线Chapters 6, 7, and 8 deal with transmission lines.II、1. 其误差为千亿分之六Its error is six parts in 1012.2. 这台计算机所存储的信息比那多3倍This compu

5、ter stores four times more information than that one (does).3. 不久的将来对这种设备的需求量为现在的20倍The demand for this kind of equipment in the near future will be 20 times what it is.4. 这个元件电压为零点几伏特The voltage across this component is a few tenths of a volt.5. 现在其内部的压力被减少了15倍Now its internal pressure is one sixte

6、enth what it was. 1. 这种新型计算机与普通相比许多优点This new type of computer has many advantages over the general type.2.解这个微分方程把未知量求出来不困难 It is not difficult to solve this differential equation for the unknown quantity. 3.在这新的五章中，第一章论述反馈的 Of these five new chapters, the first one deals with the basic principles

7、of negative feedback.4. 这时，电流与电压相位差90度At this point/time, current differs in phase from voltage by 90o.5. 通过分析该仪器的参数就能够了解他的性能By analyzing By the analysis of the parameters of the instrument, we can understand its performance.6.我们要求出它在这一距离上的平均速度 We will find out its average velocity over this distanc

8、e.7. 电子学这门学科在现今世界太重要The science of electronics is too important in the world today. 8. 他们极为困难滴解出了这道题They solved this problem with great difficulty.II、 1. 若x1则方程成立For x1, there is no solution to this equation this equation has no solution.2. 在吧这些数值代入该方程后，我们得到了下面的表达式Upon On substituting substitution o

9、f these values into in theequation, we obtained the following expression.3. 这个电路的工作情况类似图10-1的电路This circuit is similar in operation to that of Fig. 1-10.4.这台电脑性能很好 This computer is very good in performance. 5. 这些波只向一个方向传播These waves travel only in one direction. 练习4 1. 该力垂直于桌面The force acts perpendi

10、cular to the surface of the table.2. 这里的三个系数有待于确定The three coefficients here remains to be determined.3. 下面两个十字在后面几章将会经常用到The two equations below will be often (frequently) used in later chapters/in the chapters which follow.4. 这里我们使用相距10里面的两个金属球Here we use two metal balls 10 cm apart.5.输出保持不变 The o

11、utput remains/stays constant/unchanged/fixed/unaltered/the same. 6. 现有的教科书均讨论了这一问题All the textbooks available discuss this problem.7. 计算机由于运算精准，速度快而得到了广泛应用Accurate in operation and high in speed, computers have found wide applications.8. 这个题的答案看起来是正确的The answer to this problem looks correct. 9. 我们将使

12、用一段相距距离为的两根平行导线Two parallel wires a distance (of)apart carry the current i. 10. 现在的问题是如何测量这个元件上的电压The problem now is how to measure the voltage across this component. 11. 这些数据将被传到2千米外的计算中心These data will be sent to the computing center 2 kilometers away. 12. 在对上面的那个方程整理后，我们得到了下面表达式Upon rearranging t

13、he equation above, we have get, obtain the following expression. 13. 这些电荷能与存在的其他电荷相互作用These charges can interact with other charges present. 14. 里可以没有接触而被传递，这与普通的观念相反Forces can be transmitted without contact, contrary to the common belief. 15. 这个系数的典型值为This coefficient is typically 0.35. 练习5I、 1. 这个

14、方程我们可以用一下两种中任何一种来解This equation can be solved in either of the following two ways/the two ways which follow.2. 这个棒球不就会停下来是因为他与地面相互作用This baseball will soon come to rest because of its interaction with the ground.3. 我们把这个系数选为一是正确的Our choice of this coefficient as 1 is correct.4. 从把它定义为力与长度之比，我们可以看出kF

15、rom its definition as the ratio of a force to a length, we can see that k has the same unit as work (does). 5. 我门对该机器的分析是很有意义的Our analysis of the machine is of great significance. 6. 这有助于吧他们用在电路分析中This facilitates their use in circuit analysis.II、1. 这辆警车装备了想火柴盒那样大小的接收机This police car is equipped wit

16、h a receiver the size of a matchbox. 2. 人们使用一根丝线的百分之一那样粗洗的导线来连接这些 部件Wires one hundredth the diameter of a silk thread are used to connect these components.3. 我们必须对这些设备进行水冷却We must water cool these equipments/devices. 4. 在过去，电话是靠接线员来连接的In the past, telephone calls were operator connected.5. 交流电可以转换成直

17、流电，这一过程被称为整流AC can be changed/turned/converted/transformed/translated into/to DC, a process called/known as/referred to as rectification.6. 磁铁能吸引铁质材料，这是大家熟悉的现象A magnet attracts iron materials, a familiar phenomenon. 7. 计算机能够处理信息二这一过程以前头脑Computers are capable of processing information, a process that

18、 previously could be accomplished only inside our heads. 8. 外用表量电压电流电阻仪表，广泛使用在电气工程中An instrument for measuring current, voltage, and resistance, the multimeter is widely used in electrical engineering.III、1. 第1.11.2节讨论其他几个问题Secs. 1.1 and 1.2 will discuss several other problems.2. Problems are listed

19、/given on pp. 1-5.3. In the equations above, all hs are the hybrid parameters.4. The mass of the standard pound is equal to 0.4535924277 kilograms.5. All as and bs in Eq. (5-1) are related to the impedance Ro.6. We must take the effect of temperature on upon semiconductors intoaccount.7. In this cas

20、e, the variation of output with input is very small.8. This curve shows the dependence of distance on/upon speed. 练习6I、1. 人们会注意到这个头像是实像This image, it will be noticed, is a real image.2. 我们希望，这个技术问题不久就会解决This technical problem, we hope, will be solved soon.3.这一点我们认为在学习数字电子学中是很有用的 210 is approximately

21、 1000, a fact that we think is very useful in the study of digital electronics.4. 这里应该使用一个比如说100欧的电阻器A resistor of say 100 ohms should be used here.II、 1.这些教科书中均没有提到 None of those textbooks have/has mentioned this point.2.这些x的值并非都能满足该方程 All of these x values cannot satisfy the equation.3.那两个条件在此均没有得

22、到满足 Neither of the two conditions is satisfied here.4. 在前一章，我们讨论了能量In the preceding/previous chapter, we discussed all kinds of force.5.本文论述了设计飞机的一种新方法 This paper describes a new method for designing aircraft.6. 到上世纪末该公司制造了雷达By the end of the last century, the company had manufactured 5 000radars. 7

23、. 从2008，这个研究所一直在开发一种特殊机器人Since 2008, this research institute has been developing a special kind of robot.III、 1. 介绍李的概念In Section 1-2, the concept of force was introduced.2. 半导体是非常有用的As early as the 1940s, it was found that semiconductors are very useful. 3. 这一结果也能另法获得This result can also be arrived

24、 at in another way.4. 当时人们没有使用那一现象At that time no use was made of this phenomenon/, this phenomenon was made no use of.5. 这一点下一章谈论This point will be dealt with in the next section.IV、 1. This computer works much better than that one (does)/This computer is much better in performance than that one (i

25、s).2.所需元件多得多 This computer requires many more components that that one (does).3. 月离地24万英里The distance of the moon from the earth is as great as 240 000 miles.4. 电阻越大，电容器达到其最大电压所需时间越长The greater the resistance, the longer time it takes for the capacitor to reach its maximum voltage/, the longer time

26、is required for the capacitor to reach its maximum voltage.) 5.01a电流不能产生足够热 The current as small as 0.1 A cannot produce enough heat. 练习7I、 1. 借助于计算机设计这种飞机至于要几个月的时间It will take a few months to design this kind of aircraft with the help of a computer. 2. 证明这个表达式成立就留作读者的一个习题It is left as a problem to

27、for the reader to show that this expression holds. 3. 要执行的程序存储在这一单元The program to be executed is stored in this unit. 4. 这山谷用作为建大坝的基础This valley acts as the foundation on which to build the dam. 5.这实验室中有许多种仪表供学生选择 In this laboratory there are many kinds of instrument for students to choose from. 6.设

28、等于零 Let t0 equal/be equal to zero. 7.目标离得越远，回拨返回所需时间越长 The farther away the target (is), the longer time it takes for the echo to return. 8.为是该级数收敛，x必须小于1 For the series to converge, x must be less than 1. 9.我们发现这个概念很难理解 We find this concept very difficult to understand. 10.这方法使得检测目标容易多了 This method

29、 makes it much easier to detect targets. 11. 这个因素会影响计算机存储信息的能力This factor will affect the ability of a computer to store information. 12. 我们求出是r为多大时才能使用该级数收敛We have to find out how large to make r so as for the series to converge. 13. 这是画画所用的笔This is a pen to draw pictures with. 14. 弹性是物体形变后能恢复原状的趋势

30、Elasticity is the tendency of a body to return to its original condition after being deformed. 15. 普通物质是电中性的Ordinary matter is said to be electrically neutral. 16.这一性质使得金属能够被做成任何形状This property makes it possible for metals to be made into any shape. 17. 这张桌子不适宜学生试验This table is unfit for a student t

31、o do experiments on. 18.现在我们考虑去什么样的积分路径 Now we consider what path of integration to take.II、 练习8I、 1. 放大器放大接收信号The amplifier amplifies the received signals. 2.运动分子具有动能 Moving molecules have kinetic energy. 5. Fig. 1 3 shows the photo of a freely falling body. 3. 速度等于距离除以时间Speed equals distance divid

32、ed by time. 4. 电压等于电流乘以电阻Voltage equals/is equal to current multiplied by resistance. 5. 空气阻力随速度增加为增加The resistance of air increases with the increased/increasing/an increase in speed. 6. 变压器是绕在铁芯的两个多个圈组成A transformer is a device consisting of two or more coils wound on/round an iron core. 7. 流过这个元件上的电流It is necessary to find out the current flowing through this com