说明表面张力具有使得自由面返回到平衡位置的作用。
This proved that the surface tension causes free surface returning to equilibrium location.
静电平衡条件下，孤立带电导体表面任意一点的电荷处于其它电荷激发的电场中，因此受到其它电场斥力的作用，此力即为文章所讨论的表面张力。
In electrostatic field, the charges on the isolated conductor surface are repelled by the other charges, which is defined as surface repulsive force discussed in this paper.
由于表面张力的增厚作用，即使短期被拉薄，随后会在表面张力的作用下，缩小宽度，厚度回到平衡厚度。
Due to the thickening of the surface tension, even if the short term is thin, and then will be in the role of surface tension, reduce the width, thickness back to the balance of thickness.
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