And what if I took a unit charge and I multiplied it times unit voltage, one volt?

如果我取个元负荷,让它乘上个电压单位，一伏特？

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You can take this vector, multiply it by one number, take that vector, multiply it by another number, add the two of them.

比如将这个矢量,乘上一个数,然后将另一个矢量,乘上另外一个数,把这两个矢量相加

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