文档介绍：Scientific English WritingSection Ⅱ
CHAPTER I PARTS OF SPEECH
1、对系统的控制是一门跨学科的(interdisciplinary)科目。
2、速度等于距离与时间之比。
3、图5-1 Q点对晶体管工作的影响。
4、论文对其性能做了初步的分析。
5、理解二进制数字系统(binary number systems)的基础- 是要熟悉(一下)2的各次幂(power)。
6、必须确定为走完(cover)这全部距离的一半需要多长的- 时间。
7、图1-3画出了一枚玩具“水火箭”。
Independent Work .1.
1、The control of systems is an interdisciplinary subject.
2、Speed is equal to the ratio of distance to time.
3、Figure 5-1 Effect of Q-point on operation of transistor.
4、An initial analysis of its performance has been made in - this paper.
5、Basic to understanding the binary number systems is a - familiarity with the powers of 2.
6 、It is necessary to determine how long (a time) is - required to cover half the total distance.
7 、Fig. 1-3 shows a toy “ water rocket .”
CHAPTER I PARTS OF SPEECH
Independent Work .1.
EXERCISES
1. 本书讨论CAD/CAM的技术,应用及范围(scope).
2. 用三角(trigonometry)来描述电信号已证明是很有价值的。
This book describes the technology, applications and scope of CAD/CAM.
The use of trigonometry to describe an electrical signal has proved very valuable.
3. 感抗(inductive reactance)与电阻之比被称为该电路的Q。
The ratio of inductive reactance to resistance is called the Q of the circuit.
4. mon-emitter amplifier).
Here bination of these two methods is used to design mon-emitter amplifier.
这两个值相差(differ)多少?
By how much do these two values differ?
6. 当A与B交成60° 时,该物体已转了多大的角度?
By [through] what angle will the body have turned when A makes an angle of 60 °with B?
By how large an angle …
1). The ways to express a fraction
(1) general form
7/9
seven ninths
1/2
a (one) half
零点几伏
a few/several tenths of a volt
CHAPTER I PARTS OF SPEECH
Ⅱ、NUMERALS
(2) special form
百万分之三
3 parts per (in a) million
in 106
千分之七
seven parts per (in a ) thousand
in 103
EXEMPLES
这个元件上的电流为零点零几安。
The current through ponent is a few hundredths of an ampere.
这两个参数之差为百万分之十九。
These two parameters differ by 19 parts in a million.
The difference between these two parameters is…
CHAPTER I PARTS OF SP