求翻译：电势是相对而言的，就跟重力势能一样，没有参照物是没法说出它的势能是多少。 同理不选取一个零电势点，是没办法说清它的电势是多少，因为随着零是能点的选取不同，电势可能就不同。场强为零，电势不一定为零，因为电势是个相对量是什么意思？

The potential is relatively, just as no reference is impossible to say how much its potential energy is gravitational potential energy. Similarly select a zero potential point, there is no way to say clearly its potential, because with zero is able to point to select a different potential may be dif

Electric potential is a relative term, just like gravity, and there is no potential energy as a counterpoint it tell us it is what is the potential energy. This is the same does not pick a zero potential, it is clear that there's nothing I can do about it, how much is because, with the zero point is

The electric potential is, with the gravitational potential energy which relative says is same, does not have the frame of reference has no way to say its potential energy is how many. Likewise does not select a zero potential spot, is does not have the means to talk clearly its electric potential

Electromotive force is relative, the gravitational potential energy, the potential energy reference does not say it is impossible what is. Similarly does not select a zero potential point, is no way to tell how much is its potential, as zero is different point selection, potential then it might be d

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