科技人员科技英语写作班练习题和测验题 -

课后练习1 I、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 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 _____ Oersted’s experiment. 8. _____ machine is _____ device for transmitting force to accomplish _____ definite purpose.

9. _____ hydraulic press will be considered in _____ Chapter 14.

10. It is easy to determine _____ value of _____ parameter μ.

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 _____ 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.

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3、【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 evaluation of security for proactive secret sharing system

4、【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叠代法的数值方法。

【英语文本】We propose a kind of numerical method based on the Newton’s iterative method.

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课后练习2 I、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x＞1，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1－10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 voltage 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、ICBO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.

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4、【汉语原文】这个电路的优点是结构简单、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 9]

7、【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 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 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 o’clock 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.

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练习2答案

I、1. This type of computer has many advantages 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. By 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 this parameters.

II、1. For [With] x＞1, 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 earth’s rotation.

5. On [Upon] (the) application of a proper external force, the body will start to move.

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