《科技英语写作 Scientific English Writing》课程教学资源（PPT课件讲稿）（双语版）Section Ⅱ

Scientific English Writing Section I

Scientific English Writing Section Ⅱ

CHAPTER PARTS OF SPEECH Independent Work.1 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5-1Q点对晶体管工作的影响。 4、论文对其性能做了初步的分析 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

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

CHAPTER PARTS OF SPEECH Independent Work 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:

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 y1.本书讨论 CAD/CAM的技术,应用及范围( scope This book describes the technology, applications and scope of CAD/CAM 2.用三角( trigonometry)来描述电信号已证明是很有价值的。 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

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.这里使用了这两种方法的结合来设计共发放大器 (common-emitter amplifier). Here a combination of these two methods is used to design a common-emitter amplifier. 5.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

4. 这里使用了这两种方法的结合来设计共发放大器 (common-emitter amplifier). Here a combination of these two methods is used to design a common-emitter amplifier. 5. 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 …

CHAPTER PARTS OF SPEECH Ⅱ、 NUMERALS 1). The ways to express a fraction general form 7/9 seven ninths a(one) half 零点几伏 a few/several tenths of a volt

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 10 千分之七 seven parts per(in a) thousand in103

(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 this component 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

EXEMPLES 这个元件上的电流为零点零几安。 The current through this component 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 PARTS OF SPEECH 2). Numerals as pre-modifier the+名词 倍数 that of 分数 what从句 y This voltage is 80 times the signal applied to the amplifier v Its speed is three tenths that oflight. y This current is two fifth what it was 该电阻器上的电压为总电压的五分之 The voltage across this resistor is two fifths the total voltage

CHAPTER I PARTS OF SPEECH 倍数 分数 the + 名词 + that of … what 从句  This voltage is 80 times the signal applied to the amplifier.  Its speed is three tenths that of light.  This current is two fifth what it was. 该电阻器上的电压为总电压的五分之二。 2). Numerals as pre-modifier The voltage across this resistor is two fifths the total voltage

CHAPTER PARTS OF SPEECH 3). Translation techniques for a special pattern Representation of the increase in the number of times n times+比较级= n times as+原级+as y这根导线比那根长四倍。 This wire is five times longer than that one y This value is nearly 4.5 times greater than the ideal one. 该数值约比理想值大3.5信 ※这个系数比那个小九倍。 This coefficient is 10 time less than that one. This coefficient is a factor of 10 less than that one

3). Translation techniques for a special pattern Representation of the increase in the number of times CHAPTER I PARTS OF SPEECH  这根导线比那根长四倍。 This wire is five times longer than that one.  This value is nearly 4.5 times greater than the ideal one. 该数值约比理想值大3.5倍。  ※ 这个系数比那个小九倍。 ? This coefficient is 10 time less than that one. This coefficient is a factor of 10 less than that one. n times +比较级 = n times as + 原级 + as