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 __an___ ever greater interest in this subject.
2. The power rating is the maximum power the resistor can safely dissipate without too great __a_ ri in temperature.
3. Its primary disadvantage is __an___ increa in noi.
4. __The___ successful design of the equipment requires ___a__ detailed knowledge of the performance specifications.
5. In __the___ Bohr model of the hydrogen atom, ___a__ single electron revolves around ___a__ single proton in a circle of radius R.
6. The unit of frequency is ___the__ hertz.
7. If __a___ voltage is applied across ___a__ circuit, ___an__ electric current will flow in __the___ circuit.
8. ____ Fig. 5-1 shows _____ Oersted’s experiment.
9. We should u ___an__ 18-volt battery here.
10. ___A火锅底料__ machine is __a___ device for transmitting force to accomplish ___a__ definite purpo.
11. ___The__ hydraulic press will be considered in _____ Chapter 14.
12. ___The__ study of fluids in motion is one of _ the____ more difficult branches of mechanics becau of __the___ diversity of phenomena that may occur.
13. It is easy to determine __the___ value of __the___ parameter μ.
14. By _____ Eq. (2-1) we have _the____ following relation.
15. It is necessay to u __an___ S-shaped tube here.
16. The authors work at __the___ University of Texas at _____ Arlinton.
17. This is __an___ R-bit transformer.
18. ___An__ XOR gate must be ud here.
II、将下列句子译成英语，注意正确地使用冠词：
1、这是一个h参数（parameter）。
This is an h parameter.
2、现在我们转向（turn to）讨论一下局域网英语作文连接词（local area networks）。
Now let’s turn to a discussion of local area networks.
3、Bainbridge 质谱仪（mass spectrometer）是与光谱仪（optical spectrometer）一样重要的仪器。
The Bainbridge mass spectrometer is as important an instrument as the optical spectrom
eter.
4、必需求出为使一个电子通过（travel）这一段导线（length of the wire）需要多长的时间。
狼性文化It is necessary to find out how long a time it needs to ravel the length of the wire for an electron.
5、物质（substance）的密度（density）是其每单位体积的质量（mass）。
The density of a substance is its mass per unit volume.
6、地球的半径（radius）为6.37×106米。
The radius of the earth is 6.37×106 m.
7、这两个参数（parameter）是相同的。
The [The] two parameters are the same.
8、压力的增加总会引起体积的减少。
An increa in pressure always caus a一颗爱你的心 decrea in volume.
yict 9、图（2－5）画出了式（2－2）所表示的情况。
Fig. (2-5) shows what is expresd by Eq. (2-2).
10、电感（inductance）的单位是亨利（henry）。
The unit of inductance is the henry.
11、输入信号（input signal）太大会引起非线性失真（nonlinear distprtion）。
Too large an input signal can cau nonlinear distortion.
12、利用斜率（slope）的定义，我们能导出（derive）表示直线（straight line）的方程。
Using the definition of slope, we can derive the equation which reprents a straight line.
13、f (x＋h)－f(x)这一表达式（expression）经常用在学习微积分（calculus）中。
The expression f (x＋定位通h)－f (x) is frequently ud in the study of calculus.
14、能写成以下形式的方程被称为含有一个未知数（unknown）的线性（linear）方程。
An equation which can be written in the following form is known as a linear equation in one unknown.
15、在计算机中，趋势是以尽可能高的时钟速率（clock rate）工作（operate）。
In a computer, the tendency is to operate at as high a clock rate as possible.
16、锡（tin）的熔点（melting point）没有铅（lead）的高。（要求使用“have as … as”句型）
Tin does not have as high a melting point as pages文件转换成wordlead (does).
17、这个平均速度（average speed）是末速度（final speed）的一半。
This average velocity is half the final velocity.
18、电（electricity）可以容易地被转变成其它形式的能量。
Electricity can be easily changed into other forms of energy
19、1831年，美国的约瑟夫·亨利阅读题大全（Joph Henry）发现了电磁感应（electromagnetic induction）现象。
In 1831, Joph Henry in the United States discovered the phenomenon of electromagnetic induction.
20、计算机是有几部分组成的。
A computer consists of veral parts [units].
III、将下列小段内容译成英语：
化学是基于需要测量像长度、体积、质量和温度这样一些量的概念之上的。这些测量是定量的（quantitative）；也就是，它们具有与其相关的（associated with）数字。在这一节，我们将考虑用在定量测量中的一些简单仪器。我们还将考察（look at）用来表示这些
被测的量的单位。
IV、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.
The UASMA protocol employs a unique frame structure.
2、【汉语原文】一种双正交循环码M元扩频接收机的性能分析 [这是一篇论文的标题]
【英语文本】Performance analysis of a M-ary spread spectrum receiver using biorthogonal cyclic codes
3、【汉语原文】最后，用这种方法设计了宽带阶梯阻抗变换器。
