三． 原因、结果（121-160）

121. The ‘wave’ properties of macroscopic matter are not apparent because the wavelength is undetectably small.

宏观物质的波动特性不明显，因为其波长很短，难以被察觉。

122. The book remains at rest or, in physical terminology, in static equilibrium not because there are no forces acting on it but because the forces which do act on it annul one another.

此书处于静止，或者用物理术语来讲处于静力平衡，并不是因为没有力作用在它上面，而是因为作用其上的力彼此互相抵消。

123. As no machine ever runs without some friction, overcoming the force wastes work.

因为没有一台机器可以无摩擦地运转，所以克服摩擦力只是白费功夫。

124. Since the operator had more experience with mounting tape than a programmer, setup time was reduced.

鉴于操作员比程序员有更多的安装磁盘的经验，所以（由操作员进行的）安装时间就减少了。

125. As friction is always present, it naturally causes losses in all types of machines, since because of friction; part of useful mechanical energy is lost in the form of useless heat.

由于摩擦总是存在，所以很自然，部分有用的机械能会因摩擦以无用的热的形式失去，所以摩擦使所有的机器均产生（能量）损失。

126. Since a magnetic field associated with the current in a coil, any change in that current alters the magnetic field around it.

因为磁场与线圈内的电流有关，所以电流的任何变化都会引起它周围磁场的变化。

127. In summer people feel sticky in that relative humidity is quite high.

夏季人们感到皮肤粘乎乎的是因为相对湿度很高。

128. The output power can never equal the input power, for there are always losses.

输出功率决不可能等于输入功率因为总有损耗。

129. Theoretically at least we should be able to copy these mechanisms found in nature, for all biological organisms are in part actually electrical systems.

至少在理论上我们应该能够模仿在自然界发现的这些机制，因为在所有生物组织中有一部分实际上是电系统。

130 Because of the high cost of these early computers, idle time was undesirable.

由于这些早期计算机价格高昂，所以（出现）闲置时间是人们所不期望的。

131. The energy possessed by an object by virtue of its motion is called kinetic energy, or energy of motion.

物体由于运动而具有的能量叫动能。

132. In the cloudless night ground temperature decreases on account of the heat lost to the space.

在无云夜间地面温度由于其热量散失到空间而下降。

133. The high yields overall are attributed mainly to good seedbed structure and a manual precision seeding.

总的来说，这些高产量主要是由于适宜的苗床结构和精细的手工播种。

134. In view of the importance of the plateau to the weather and climate over broad areas, a scientific investigation was carried out a few years ago.

鉴于这一高原对广大地区的天气和气候的重要性所以在数年前曾进行过一次科学考察。

135 The decrease in intensity due to absorption is called damping and a wave whose intensity decreases for this reason is called a damped wave.

由于被吸收而强度减低叫做阻尼，而由于这一原因其强度减小的波叫做阻尼波。joozone.com