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中文摘要：
研究了以蒸馏水为介质的驻波声场对微小颗粒群的作用，观察了颗粒群的运动规律，并应用声流和声辐射压力理论对其进行分析．运用谱分析方法，探讨了驻波声场中的空化现象．结果表明，大部分颗粒在声压波腹处聚集，而在声压波节处明显出现了高次谐波，说明空化效应发生在声压波节处．
英文摘要：
The effect of the standing wave field in distilled water on the tiny particles is studied, the motion behaviour of particles is observed and analysed with the theory of acoustic streaming and radiation pressure. Finally, the cavitation phenomena in the standing wave field is discussed by the method of spectrum analysis. The result indicated that most of the particles are gathered in the pressure loop. But in the pressure node, the ultraharmonics are appeared clearly, which shows the acoustic cavitation occurs in pressure node.
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