没有电力
双语例句原声例句
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没有电力或燃料。
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源自还没有电力，人们使用蜡烛的那个时期。
It is from the time before electricity, when people used candles for light.
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这个地区的加油站停电次数增多，原因是油泵没有电力。
Even gasoline stations in this region are silent more days than not, because the pumps lack electricity.
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I am going to say if that electron is to stay in its orbit, that is to say it doesn't flee the atom, it doesn't collapse under the nucleus then the sum of the forces on the electron must be zero No net force. And so that will be the sum of a dynamic force plus an electrostatic.
如果电子会保持在它的轨道上运行,既不脱离原子的话，它就不会由于原子核对它的吸引力而被瓦解掉,电子所受的合力一定为零,由于没有合力,所以电子所受力为动态力和静电力的总和。
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