问题描述：
电学方面的两句翻译问题
问一下下面两句怎么翻译最合适?主要是括号中的怎么翻译?
The charge (equal to that on a positive charge at -x) is called the image charge.
the total potential energy as a function of distance (downward from the x axis) is given by ...
问一下下面两句怎么翻译最合适?主要是括号中的怎么翻译?
The charge (equal to that on a positive charge at -x) is called the image charge.
the total potential energy as a function of distance (downward from the x axis) is given by ...
问题解答：
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