It did not sound like the communication of a man who believed his army to be on the offensive . 从来电的口气看，不象是他的军队处于攻势。
By noting how the pattern of electricity in the water changes, they can find their way about . 通过电的波型在水里的变化，它们可以来去自如。
Two main lines of attack have been followed, one being chemical and the other electrical . 处理方法主要有两类，一是化学方法，另一是电的方法。
By this electric repulsion and attraction he was able to counterbalance the influence of gravity . 通过这种电的排斥和吸引，他能够将重力的影响抵销。
Technological innovation without concomitant social innovation is like a light bulb without electricity . 没有社会创新伴随的技术创新就象没有电的电灯泡一样。
The primary purpose is retention of electrical insulation and low-loss properties after extensive exposure to water . 主要目的在于在强烈侵水后保持其电的绝缘性以及其他性能降低较少。
Electrical methods are inherently more powerful than chemical methods because large amounts of energy can be applied rapidly . 电的方法天生地比化学方法更加有力，因为可迅速施加大量的能量。
He discovered that objects charged with vitreous electricity repel each other but attract objects charged with resinous electricity . 他发现，带有玻璃质电的物体彼此排斥，但与带树脂质电的物体则相吸引。
Placing such systems on roof-tops reduces the need for land and puts them close to the places where the energy will be used . 将这种系统安装在屋顶上，既减小土地的需用量，还能使它们靠近需要用电的地方。
It made my mouth and nostrils smart like charged water, seemed to go to my head a little and produce a kind of exaltation . 它象带着电的水一样，使我的嘴巴和鼻子刺痛，它简直是钻进了我的头脑，产生了一点沉醉。
