写作高级教程(第二版)参考答案2015-6

V、练习参考答案

练习1

I、

1、the（各项均为负。)

2、the; a （功率额定值是电阻器不会引起温度太大的上升而能安全地耗散的最大功率。）

3、an（这是均方根值伏特计。）

4、The; a（该设备的成功设计需要详细地了解性能指标。）

5、the; a; a（在氢原子的布尔模型中，一个电子绕一个质子以半径为R的圆周运转。）

6、the（电阻的单位是欧姆。）

7、an （这是一个h参数。）

） 8、/; /（图5－1画出了Oersted的实验。

9、A; a; a（机器是能够传递力来完成某一确定目的的一种设备。）

10、/（水压机将在第14章加以考虑。）

11、the; the [/]（我们容易确定参数μ的值。）

12、/; the（根据式（2－1），我们得到以下的关系式。）

13、the; /（作者工作在位于阿林顿的得克萨斯大学。）

14、an（甚至当积分区间并不是无穷时，能够恰当地显示一个时函数的傅氏变换的仪器是多么重要啊！）

II、

1. Dr. Emmet graduated from Harvard University in 2001.

2. 3. Now we shall turn to the discussion of local area networks.

4. 5. How long 或6. 7. 8. III、

1. 2. 3. 4. 5. 练习2

I、

II、

1. Its error is six parts in 1012.

2. This computer stores four times more information than that one (does).

3. The demand for this kind of equipment in the near future will be 20 times what it is.

4. The voltage across this component is a few tenths of a volt.

5. Now its internal pressure is one third what it was.

III、

CBO can be neglected. 练习3

I、

o.

II、

there is no solution to this equation [this equation has no solution].

4. This computer is very good in performance.

III、

th of October.

4. VCBO can be neglected.

7.

练习4

I、

1. The force acts perpendicular to the surface of the table.

5. The output remains/stays constant/unchanged/fixed/unaltered/the same.

7. Accurate in operation and high in speed, computers have found wide applications.

8. The answer to this problem looks correct.

9. Two parallel wires a distance (of)δapart carry the current i.

II、 1. In this case, the input does not fall; nor [neither] does the output. […; the output does not fall, either.]

temperature of the conductor. 练习5

I、

k has the same unit as work (does).

II、

5. AC can be changed/turned/converted/transformed/translated into/to DC, process called/known as/referred to III、

3. In the equations above, all 5. All Ro. account.

IV、 练习6

I、

3. 210

II、

radars.

III、

phenomenon was made no use of.

IV、

required for the capacitor to reach its maximum voltage.)

V、

或：We can determine the weight of the body easily. 练习7

I、

5. In this laboratory there are many kinds of instrument for students to choose from.

6. Let t0 x must be less than 1.

II、

2. Not only . Smith for his great help.

练习8

I、

.

4. V

II、

1. radius R.

2. 3. 4. 5. This paper introduces a new design method/technique, with emphasis on its principle.

III、

1. 2. 3. 4. of equations.

5. IV、

1. 2. 3. 4. 5. 练习9

I、

II、

8. One of/Among the other factors into account.

III、

1. 2. The existence of and the ability to control these phenomena make those devices possible.

3. of/in its dimensions.

4. 5. 练习10

I、

II、

III、

x或：Fig. 7 shows …].

network.

或：The above

练习11

I、

7. The number of times this particle vibrates per/a second is called/termed/named/known as/spoken of as/referred to as frequency.

y-component has decreased to zero.

x-axis.

II、

α= ω.

oC.

III、

IV、

5. During the ten years significant changes have taken place/have been seen in metal-making.

V、

of equalization parameters on equalization performance.]

号与缩略词“etc.”的黑点重合在一起了）

练习12

I、

1. be grounded; 2. be carried; 3. be raised; 4. be; 5. not try; 6. be; be satisfied; 7. be; 8. be; was; have; 10. were concentrated; 11. had been; 12. were moving; 13. is going to rain; 14. be; 15. leak

II、

1. Should anything abnormal happen, switch/turn off the power supply at once/immediately.

2. Had electronic computers not been used, it would have taken them a long time to solve this problem.

3. It is very important that all solutions (should) be checked in the original equation.

4. It is suggested that this design (should) be modified at once.

5. Without semiconductors, satellite communications would be impossible.

6. We could also have used Theorem (6) to derive the result.

7. The requirement that energy (should) be conserved must be satisfied.

8. Everything here, be it a component or a device, is home-made.

III、 5. This property we call inertia.

IV、

练习13

II、

4. Only when x II、

III、

IV、

algorithm.

3. A new technique for estimating the frequency deviation is proposed which gives a high accuracy and requires a small amount of computation.

4. Improvement of the accuracy of range alignment in ISAR imaging (by) using the super resolution technique

练习14

I、

1. then; Next

2. while

3. of course

4. However

5. In general; while

6. Hence

7. In fact

8. For instance

9. but; However; namely [that is]

10. Instead

II、 It has been observed that bodies do not change their state of rest or motion until some other body forces them to do it. It is known form experiment that a body at rest tends to stay at rest unless a force is applied to make it move. A book lying on a table stays there unless a force is applied to move it. It is also known that any body, once (it is) in motion, will continue to move because of its inertia. To stop it a force must be applied by any other body.

III、

练习15

I、

Semiconductors are a substance whose conductivity lies/comes/is between that of conductors and that of non-conductors. II、

ξ1 andη3.

3. The features of this new algorithm are simplicity and objectivity.

练习16

I、

1． II、

III、

th century are presented in this paper.

IV、

1. This cable has an approximate length of 20 meters/a length of approximately 20 meters.

2. These pipes have an average length of slightly/a little/a bit under/less than 5 meters.

3. Light has a speed through water of 224 million meters per second.

4. Any other sea does not have as high a salt content as the Dead Sea (does).

5. This force has a torque arm of zero.

6. These forms have the advantage that it is easy to see how the results are affected by changing the angles.

V、

VI、

1. This method requires a much smaller amount of computation than that one (does).

2. This device consumes much less energy that that one (does).

3. We should use as simple a structure as possible.

4. We have obtained satisfactory/satisfying results.

5. Body A possesses more potential energy than body B.

6. This fluorescent screen displays clearer pictures than that one.

VII、

1. …… because of fairly low conductivity of the skin.

2. At temperatures greater than 80oC, …….

3. At/For/With constant pressure, …….

4. At/On/After the completion of all tests on the unit, …….

5. For/With small values of ω, ……

VIII、

.

oo IX、

1. This fraction is rationalized by multiplying the numerator and denominator by the complex conjugate.

2. The addition of two complex numbers is accomplished by separately adding the real and imaginary parts.

3. The/Its solution is accomplished by first finding out I1.

4. These three parameters are related by the following equation.

5. V is related to t by Eq. (1–1).

X、

This paper presents a new design method, with emphasis on the guidelines of thought for its derivation. It has many advantages over those available [the existing ones]. Finally [Lastly], Its application is illustrated with an example.

XI、

I and a characteristic impedance of 500 Ω.

练习17

I、

1. （略）

2. David J. Minot attended the University of California, Berkeley, CA. from 1994 – 1998. He earned the BS degree in botany there in 1998, and the M. Eng. Degree in electrical engineering from the University of Toronto, Toronto, Ontario, Canada in 2000. Since 2004 he has been working towards the Ph.D. degree in computer science at the University of Pennsylvania, Philadelphia, PA, USA.

In 1998 he served as a teaching assistant at the University of California. From 2000 to 2001 he was with the Moore School of

Electrical Engineering, University of Pennsylvania. His research interests concentrate on the development of software.

II、

This device can identify whether an IC functions properly or not and it can determine the type of an unknown chip. It can test as many as more than 700 kinds of IC. It is characterized by easy operation, high testing speed and great portability. Its price is only about one-third that of the imported product of its kind/the same kind.

III、

antenna pattern.

2. e 练习 18

I、

1. Frequency is defined as the rate at which something occurs./By frequency is meant the rate at which something happens.

2. A thermometer is an instrument for measuring temperature.

3. Elasticity is defined as the tendency of an object to return to its original state after being deformed./By elasticity is meant the tendency ….

4. An isosceles triangle is a triangle/one having two equal sides/having two sides equal in length/with two sides equal in length.

5. An electron is a particle with a mass of 9.107×10– 18 gram.

II、

The wavelet theory has so unique an advantage that it has found wide applications in many fields of engineering. Since this is the development and improvement of the Fourier analysis, it can, in principle, be used [A development and improvement of the Fourier analysis, this theory can, in principle, be used] where the traditional Fourier analysis is applicable. What is more, better results may be obtained on account of the fact that this theory overcomes the shortcomings of the Fourier analysis.

III、