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用高速摄影技术，在表面张力不同的四种液体中，对电火花放电造成的单空泡膨胀及收缩过程观测表明，含沙浓度对空泡的膨胀及收缩过程的影响类似于液体粘滞性对空泡的膨胀及收缩过程的影响．文中分析了表面张力的影响程度．
Using high-speed photographic technique, the observation of single bubble expansion and contraction caused by EDM in four liquids with different surface tension shows that the effect of sandy concentration on expansion and contraction of bubble is similar to that of liquid viscosity Effect on expansion and contraction of vacuole. The paper analyzes the influence of surface tension.