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表面张力是发生在液体表面,能使液体表面积缩小的内聚力。表面张力形成的基本原因在于处在液体表面层的分子受力情况的不平衡。同时作用在表面层分子上的大小和方向各不相同的吸引力(范德华力)经矢量合成后的合力即表现为表面张力。通常发生在一个球形
Surface tension is the cohesion that occurs on the surface of a liquid and reduces the surface area of the liquid. The basic reason for the formation of surface tension lies in the imbalance of the molecular forces at the liquid surface layer. At the same time the role of the surface layer molecules on the size and direction of the attraction (van der Waals forces) by the resultant force after the synthesis of the surface tension. It usually happens in a sphere