1、1课后练习 1I、在下列每个句子的空白处填上适当的冠词（如果必要的话） ，然后将句子译成汉语：1. There has been _ ever greater interest in this subject.2. The power rating is the maximum power the resistor can safely dissipate without too great _ rise in temperature.3. Its primary disadvantage is _ increase in noise.4. _ successful design of the
2、 equipment requires _ detailed knowledge of the performance specifications.5. In _ Bohr model of the hydrogen atom, _ single electron revolves around _ single proton in a circle of radius R.6. The unit of frequency is _ hertz.7. _ Fig. 5-1 shows _ Oersteds experiment.8. _ machine is _ device for tra
3、nsmitting force to accomplish _ definite purpose.9. _ hydraulic press will be considered in _ Chapter 14.10. It is easy to determine _ value of _ parameter .11. By _ Eq. (2-1) we have _ following relation.12. It is necessay to use _ S-shaped tube here.13. The authors work at _ University of Texas at
4、 _ Arlinton.II、根据所给的汉语文本，改正各英语文本中的错误：1、 【汉语原文】UASMA 协议采用了独特的幀结构。【英语文本】UASMA protocol employs an unique frame structure.2、 【汉语原文】最后，用这种方法设计了宽带阶梯阻抗变换器。【英语文本】At last, broad stepped impedance transformer is designed by this method.23、 【汉语原文】先应秘密共享系统安全性的动态分析和评估 这是一篇论文的标题 【英语文本】Dynamic analysis and evalua
5、tion of security for proactive secret sharing system4、 【汉语原文】利用状态转移图，获得了系统的安全性概率。【英语文本】With state-transition diagram, security probability of system is obtained.5、 【汉语原文】该方法适用于任意形状的一维势垒。【英语文本】The approach can be applied to one-dimensional potential barrier with arbitrary profile.6、 【汉语原文】我们提出了一种基于牛顿
6、叠代法的数值方法。【英语文本】We propose a kind of numerical method based on the Newtons iterative method.3课后练习 2I、将下列句子译成英语，注意正确使用介词：1、这类计算机与那类相比有许多优点。2、我们必须解这个方程把回路电流（loop current）求出来。3、在这新的五章中，第一章论述负反馈（negative feedback）的基本原理。4、这个电路（circuit）中的电流（current）与电压（voltage ）的相位（phase）相差 90 度。5、声波朝四面八方传播。6、通过分析该仪器的参数，我们
7、就能够了解它的性能。7、这是解该方程的一个充分必要条件。8、我们是用牛顿（newton）来度量力的。9、本文介绍测量这一参数的一种新方法。II、将下列句子译成英语，要求使用介词短语来表示句中的画线部分：1、若 x1，则该方程无解。2、在研究电学（electricity）时，物理学家们定义了该参数。3、这个电路的工作情况类似于图 110 的电路。4、这部分原因是由于（due to）地球的自转。5、一当加上合适的外力（external force）后，该物体就会开始运动。III、根据所给的汉语文本，改正各英语文本中的错误：1、 【汉语原文】这个电容器上的电压为零点零几伏特。【英语文本】The vo
8、ltage on this capacitor is zero point zero several volt.2、 【汉语原文】这物体比那物体重四倍。【英语文本】This object is four times heavy than that one is.3、 【汉语原文】除非另有说明，我们假设使用的是硅管、I CBO 可以忽略不计。【英语文本】 Unless otherwise stated, it is assumed that silicon transistors are used and ICBO can be neglected.44、 【汉语原文】这个电路的优点是结构简单、
9、容易调整。【英语文本】This circuit has the advantage of simpe in structure、easy to adjust.5、 【汉语原文】图 1、2、3 画出了这个过程。【英语文本】Fig. 1, 2, 3 draw this process.6、 【汉语原文】对于进一步的信息，参见文献【3，5，9】 。【英语文本】For further informations, consult references 3, 5 and 97、 【汉语原文】本文提出了雷达目标的一种新的识别方法。【英语文本】This paper presents a new kind of
10、 recognition method of radar target.8、 【汉语原文】与现有的方法相比，这种新方法具有许多优点。【英语文本】Compared with the methods available, this new kind of method has many advantages.9、 【汉语原文】这台新设计的仪器质量很好。【英语文本】This new designed instrument is in good quality.10、 【汉语原文】在 10 月 8 日早上又发射了一颗通讯卫星。【英语文本】Another comsat has been launched
11、 in the morning of the 8th of October.11、 【汉语原文】这实验是从昨晚 8 点开始的。【英语文本】This experiment started from 8 oclock in the last night.12、 【汉语原文】他们将赴北京参加移动通讯国际会议。【英语文本】They will leave to Beijing to attend a international conference of mobile communication.5练习 2 答案I、1. This type of computer has many advantages
12、 over that one.2. It is necessary for us to solve this equation for the loop current.3. Of these five new chapters, the first one deals with the basic principles of negative feedback.4. The current in this circuit differs in phase from the voltage by 90o. 5. Sound waves travel in all directions.6. B
13、y analyzing By the analysis of; Through the analysis of the parameters of the instrument, we can understand its performance.7. This is a the sufficient and necessary condition for solving the equation.8. We measure the force in newtons.9. This paper presents introduces a new method for measuring thi
14、s parameters.II、1. For With x1, the equation has no solution there is no solution to the equation.2. In their study of electricity, physicists defined the parameter.3. This circuit is similar in operation to the circuit that of Fig. 1-10.4. This is due in part to the earths rotation.5. On Upon (the)
15、 application of a proper external force, the body will start to move.6课后练习 3I、努力用学到的句型将下列句子译成英语：1、这篇论文没有什么新内容。2、该力垂直于桌面作用。3、现有的教科书均讨论了这一问题。4、计算机由于运算（operation ）准确（accurate） 、速度快而得到了广泛的应用。5、相距一段距离 的两根平行导线（parallel wire）载有（carry）电流 （current ）i。6、现在的问题是如何测量这个元件上的电压（voltage） 。7、这些数据将被传送到 2 公里远的计算中心（comp
16、uting center） 。8、那个陈述（statement）听起来有道理。9、这些电荷（charge）能与存在的其它电荷相互作用（interact） 。10、力可以没有接触进行传递（transmit） ，这与普通的观念（belief）相反。11、这个系数的典型值为 0.35。12、该电荷正平行于电场（electric field）运动。II、将下列句子译成英语，特别注意代词的正确用法（凡是有画线的部分均要求用一个短语来表示）：1、这检测过程（detection process）可以用以下两种方法（way）的任何一种来进行（perform） 。2、这个棒球（baseball）不久会 停了下来
17、（come to rest） ，是因为它与地面相互作用的缘故。3、我们把这个系数选为 1 是正确的。4、这是由于（due to）它使用了 继电器（relay）而不是电子器件（electronic device）的缘故。5、从把它定义为力与长度之比，我们可以看出 k 具有与功相同的单位。6、在这个式子中，那个因素（factor）被忽略7（ignore ）掉了。 如果把它包含（include）在这儿只会使推导过程（proceedings）复杂化（complicate） 。7、由于反馈（feedback）在电子线路（electronic circuit）中起着重要的作用，所以对它的研究极为重要。8、
18、我们对该机器的分析是很有意义的。9、这有助于（facilitate）把它们用在电路分析（circuit analysis）中。III、将下列句子译成英语，注意对画线部分要用名词或名词短语来表示：1、这辆警车装备了像火柴盒（matchbox）那么大小的接收机。2、磁铁（magnet）能吸引（attract）铁质材料（iron material） ，这是大家熟悉的现象。3、如果这个关系式（relation）成立（hold）的话，我们就得到一个负的电流，这种情况（situation）是不可能的 。4、电路（circuit）中的电流（current）与外加电压（applied voltage）成正比（
19、be proportional to） ，这一点是由欧姆（Ohm）用实验方法（experimentally）证实（verify ）的。5、色谱分离法（chromatography ）是一种非常有效的分离（separation ）方法，它已得到了广泛的应用。6、万用表（multimeter）是测量电流、电压、电阻的仪表，它广泛地用在电气工程中。7、这些材料是压敏的。IV、将下列句子译成英语：1、我们必须把温度对半导体（semiconductor ）的影响考虑进去。2、在这种情况下，输出随输入的变化是很小的。3、这一曲线画出了距离对于速度的依从关系。4、把原子能（atomic energy）用作为
20、能源（source of power）是很重要的。5、把杂质（impurity）从这矿石（ore）中分离开来是很难的。6、我们都熟悉把电流定义为电荷的流动。VI、根据所给的汉语文本，改正各英语文本中的错误：81、 【汉语原文】其它类型的级数也广泛地用在工程上。【英语文本】Other types of the series is also widely used in engineering.2、 【汉语原文】他们都不会解这类特殊的微分方程。【英语文本】All of them cannot solve this type of special differential equation.3、 【
21、汉语原文】共有 M 个多边形，其每个顶点数均为N。【英语文本】There are M polygons altogether, whose vertex number is all N.4、 【汉语原文】这两位工程师在忙于设计一种新的软件。【英语文本】This two engineers are busy to design a kind of new software.5、 【汉语原文】铁的导电性能几乎与铝一样好。【英语文本】The iron is almost as good conductor as the aluminum.6、 【汉语原文】这台转动的机器将在一、二分钟后自动地停下来。
22、【英语文本】This running machine will stop of itself after one minute or two.7、 【汉语原文】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。【英语文本】The resistance of a conductor not only depends on the material with which the conductor is made, but also on the size and temperature of the conductor.8、 【汉语原文】这个参数几乎不能测出来。【英语文本】This
23、 parameter almost cannot be measured.9、 【汉语原文】本书的序言写得很好。【英语文本】The preface of this book is good written.10、 【汉语原文】在这个实验室中，这台仪器比其它任何一台都贵。【英语文本】In this laboratory, this instrument is more expensive than any one.911、 【汉语原文】该设备的特点是体积小、重量轻。【英语文本】The feature of the device is small in size、light in weight.练
24、习 3 答案I. 1. This paper contains has nothing new. There is nothing new in this paper.2. The force acts perpendicular to the surface of the table.3. All the textbooks available discuss this problem.4. Accurate in operation and high in speed, computers have found wide applications.5. Two parallel wires
25、 a distance (of) apart carry the current i.6. The problem now is how to measure the voltage across this component.7. These data will be sent to the computing center 2 kilometers away.8. That statement sounds quite reasonable.9. These charges can interact with other charges present.10. Forces can be
26、transmitted without contact, contrary to the common belief.11. This coefficient is typically 0.35.12. The charge is moving parallel to the electric field.II. 1. The detection process can be performed in either of the following ways.2. This baseball will soon come to rest because of its interaction w
27、ith the ground.3. Our choice of this coefficient as 1 is correct.4. This is due to its use of relays rather than electronic devices.105. From its definition as the ratio of a force to a length, we can see that k has the same unit as work (does).6. In this equation, that factor is ignored. Its inclus
28、ion here would merely complicate the proceedings. 7. Since feedback plays an important role in electronic circuits, its study is of great importance.8. Our analysis of the machine is of great significance.9. This facilitates their use in circuit analysis.III. 1. This police car is equipped with a re
29、ceiver the size of a watch. 2. A magnet attracts iron materials, a familiar phenomenon.3. If this relation were to hold, we would have a negative current, an impossible situation. 4. The current in a circuit is proportional to the applied voltage, something a fact that was verified experimentally by
30、 Ohm.5. A very effective separation method, chromatography has found wide applications.6. An instrument for measuring current, voltage, and resistance, the multimeter is widely used in electrical engineering.IV. 1. We must take the effect of temperature on upon semiconductors into account.2. In this
31、 case, the variation of output with input is very small.3. This curve shows the dependence of distance on upon speed.4. The use of the atomic energy as the source of power is very important.5. The separation of impurities from the ore is very difficult.6. We are all familiar with the definition of c
32、urrent as the flow of charge.11测验 1I、英译汉：1. The controller can send electric signals over communication lines.2. The base address is usually switch selectable on the card.3. During the motion of a mechanism（机构）, the transmission angle（传动角） changes in value.4. Insensitive to adverse（不利的）temperature c
33、hanges, dust, and vibration, the bubble memory（磁泡存储器）has demonstrated superior reliability in shop environment（车间环境）.5. The Air Force neither confirmed（证实）nor denied（否认）the existence of “Senior Citizen”（“高级公民”间谍飞机）at the time, a position often taken on advanced programs in the early stages of their
34、development.6. Many lathe（车床）manufacturers combine these two rods（杆）in one, a practice that reduces the cost of the machine at the expense of accuracy.7. From its definition as change in velocity by elapsed time, radial acceleration（径向加速度）is expressed in m/sec2 or cm/sec2. II、汉译英：1、其波长（wavelength ）比
35、空气中的长 2 倍多。2、输入信号太大会引起非线性失真（nonlinear distortion） 。3、 由于结构简单、价格低廉， 这种机器很受用户青睐。12（要求对方框内的东西用短语表示）4、这证明（justify） 我们把这个参数选为 1 是合理的。（要求对方框内的东西用短语表示）5、我们只需要测出这个电容器（capacitor ）上的电流。（要求使用强调式句型）6、设计接收机的原理与设计计算机是不同的。7、二极管（diode）能够把 AC 转变成 DC，这一过程（process ）就叫做 整流（rectification） 。要求使用一个简单句测验 1 的参考答案：II、1. Its
36、wavelength is over 3 times longer than that in air.2. Too large an input signal will cause nonlinear distortion.3. Simple in structure and low in price, this kind of machine is warmly received by users.4. This justifies our choice of this parameter as 1.5. All we need to do is (to) measure the curre
37、nt through this capacitor.6. The design of a receiver is different in principle from that of a computer.7. A diode can change AC into DC, a process called known as; referred to as rectification.13课后练习 4I、将下列句子译成英语，注意画线部分要用插入句来表示：1、这些系统将以作者所希望的简明的方式（concise manner）来介绍（present） 。2、2 10 近似为 1000，这一点我们认
38、为在学习数字电子学（digital electronics）中是很有用的。II、将下列句子译成英语，注意正确表达否定和时态：1、没有哪个电路（circuit）是没有电阻（resistance）的。2、那些教科书均没有提到这一点。3、那两个条件在此均没有得到满足。4、在前一章，我们讨论了各种力。5、本文论述了设计飞机的一种新方法。6、到上个世纪末，该公司已制造了五千部雷达。7、自从 2002 年以来，这个研究所一直在开发一种特殊的机器人（robot） 。III、将下列句子译成英语，注意正确使用被动句：1、 早在二十世纪四十年代，人们发现半导体（semiconductor）是非常有用的。2、 这一
39、结果也能够用另一种方法来获得（arrive at） 。3、 当时人们没有使用（make use of）那一现象。IV、将下列句子译成英语，注意正确使用表示比较的14句型：1、 这台机器的性能比那台好得多。2、 这台计算机所需的元件数比那台多得多。3、 宏指令（macro）在 C+中的用途要少得多。4、 月亮离地球的距离远达 24 万英里。5、 电阻（resistance ）越大， 电容器（capacitor ）达到其最大电压（voltage）所需的时间越长。6、 物体被扔得越远，所需的力就越大。V、将下列句子译成英语，要求对画线部分用动词不定式来表示：1、我们只需要测出这个物体上的压力。2、借
40、助于计算机设计这种飞机只需要几个月的时间。3、证明（show）这个表达式（expression）成立（hold）就留作为读者的一个 习题（problem） 。4、要执行（execute）的 程序储存在这一单元中。5、这山谷（valley）用作为建坝（dam）的基础（foundation） 。6、假设（let）需要求出这个分量（component）来。7、设（let）t 0 等于零。8、目标（target）离得越远， 回波（echo ）返回（return）所需的时间就越长。9、我们发现这道题（problem）容易解。10、必须解这个方程把 x 求出来。11、为使该级数（series）收敛（con
41、verge, vi.） ，x 必须小于 1。12、这个因素（factor）会影响计算机存储信息的能力。13、我们得求出使 r 为多大才能使该级数收敛。14、这是画画所用的笔。15、弹性（elasticity）是物体 形变（deform, vt.）后能恢复（return to）原状的趋势。16、普通物质被说成是电中性的（electrically neutral ） 。17、这一性质使得金属能够被做成任何的形状。18、这张桌子不适宜学生做实验。VI、根据所给的汉语文本，改正各英语文本中的错误：1、 【汉语原文】我们容易确定该物体的重量。15【英语文本】We are easy to determin
42、e the weight of the body.2、 【汉语原文】空气把压力施加于四面八方。【英语文本】The air exerts the pressure toward every direction.3、 【汉语原文】我们发现这个概念很难解释。【英语文本】We find this concept very difficult to be explained.4、 【汉语原文】若把式（17）代入式（18） ，我们就得到以下的关系式。【英语文本】If Eq. (1-7) is substituted in Eq. (1-8), we obtain the following relatio
43、n.5、 【汉语原文】声音传播比光慢得多。【英语文本】Sound travels less faster than light is.6、 【汉语原文】功等于力乘以距离。【英语文本】Work equals to force multiplying distance.7、 【汉语原文】所得结果与实验数值相吻合。【英语文本】The results obtained fit the experimental values.8、 【汉语原文】强调指出了光强随圆柱体直径变化的正弦规律。【英语文本】The sine law of the variance of the light intensity br
44、ought due to the variance of the cylinder diameter has been pointed emphatically.9、 【汉语原文】我们的方法与以前讨论同一问题的文章中所述的不同。【英语文本】Our method is different from previous articles discussed the same problem.10、 【汉语原文】为了做到所有这一切，对计算机科学必须要有清晰的了解。【英语文本】To do all these, sound knowledge of computer science is necessar
45、y.11、 【汉语原文】不仅温度和光影响导电率，而且给半导体加杂质也会使导电率变化很大。【英语文本】Not only temperature and light affect the 16conductivity, but the addition of impurities to semiconductors also make it to change greatly.12、 【汉语原文】我们的半导体工业是在二十世纪五十年代形成的。【英语文本】Our semiconductor industry comes into being in the end of 1950s.13、 【汉语原文】
46、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。【英语文本】I and my colleagues would like to express our thank to professor W. Smith for his great help.练习 4 答案I、1. These systems will be presented in what the author hopes is a concise manner.2. 210 is approximately 1000, a fact that we think is very useful in the study of
47、digital electronics.II、1. No circuit has no resistance.2. None of those textbooks mention(s) this point.3. Neither of the (two) conditions is satisfied here.4. In the previous chapter, we discussed have discussed all kinds of forces.5. This paper deals with a new method for designing aircraft.6. By
48、the end of the last century, the corporation company had manufactured 5000 radars.7. Since 2002, this research institute has been developing a special kind of robot.III、1. As early as the 1940s, it was found that semiconductors were very useful.2. This result can also be arrived at in another way.3.
49、 At that time no use was made of that phenomenon.IV、1. This machine is much better in performance than that one (is).172. This computer requires many more components than that one (does). 3. Macros have far fewer uses in C+.4. The distance of the moon from the earth is as great as 240,000 miles.5. 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 reac
