Experiments show that the molecular force of attraction and repulsion of the vector.
实验表明，分子力为吸引力和排斥力的矢量和。
This paper discusses how correctly understand the repulsion force between the contacts, and the formula is derived for calculating the force by principle of energy balance.
本文讨论如何正确理解触头间的推斥电动力，并用能量平衡原理对触头推斥电动力的计算式作了分析与推导。
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