Lesson eight 第八课
Ⅱ.翻译句子，并注意remain和above的词类和词义
2. In this case the voltage applied must remain unchanged.
在这种情况下，那个应用电压必须保持不变
4. If you take 3 from 8, 5 remain.
如果从8中拿走3，剩5.
6. The above property was discovered by Faraday.
法拉第发现以上性质。

8. Lenz states that the self-induced emf impedes any change of current and tends
to support the former current value. The above is known as Lenz’s law.
楞茨陈述自感电动势阻止电流的变化而保持先前电流的值。

上面就是我们所知的楞
次定律。

Ⅲ.翻译句子，注意some的词义
2. That radio receiver weighs some five kilograms.
那个无线接收器重五公斤。

4. Some element in the substance is not known.
物质中的一些元素是人们不知道的。

Ⅳ.翻译句子，注意句中one 的不同用法和词义。

2. This concept was discussed in Chapter One.
这个概念在第一张讨论过。

4. No one can lift this equipment.
没人能举起这件设备。

6. This chapter will deal with one of the three functions of a turning circuit.
这章我们将介绍螺旋电路三个功能中的一个。

8. Before one studies a system, it is necessary to define and discuss some
important terms.
在研究一个系统之前，确定且讨论一些重要的术语是有必要的。

Ⅴ.画出句中的名词从句，说明其种类，并将句子译成汉语。

2. These experiments do not show which particles.
这些实验不能显示他们的粒子结构。

4. The operating point is determined by how much bias is used.
操作要点是被用多少偏压决定的。

6. It is not important how this voltage is produced.
这个电压是怎么产生的并不重要。

8. It may be questioned whether this approach is the best for the physicist.
这种方式最适合于医生可能会被质疑。

10. This ball may be used to determine whether that body is charged.
这个球可能用于检测是否身体是带电的。

12. It is known that charged particles emit electromagnetic waves whenever they
are accelerated.
众所周知的当电子被加速他们就会发射电磁波。

14. The value of this factor determines how fast the amplitude of the current
decreases.
这个因数的值决定了增幅管中电流减小的速度。

Ⅵ.翻译短语
1. A. 在一定程度上
On one certain level
B. 很明显
Very clear
C. 恢复原来的调制电压
Recover modulating voltage
2. A. the order of picowatts
皮瓦的排序
B. all the modulation systems
所有的调制系统
C. quite likely to be accompanied by lots of other undesired signals.
很可能伴随有很多其他不想要的信号
Ⅶ.将句子译成英语
3.Maybe the law is very useful
4.Ohm discovered that between current, voltage and resistance exists a simple
relation.
5.Whether the conclusion is right still wait for prove.。