作者研究了两个浸没在液体中受声场作用的球状微粒间的辐射力,并得一描述它们相互作用的有用功的表达式,这个功定义为W_(min)(束缚能)。多微粒相互接触,其中心连线正好垂直于所在声场的振动方向,在时就产生W_(min)。当W_(min)足够大时,两个微粒构成的二联体又会吸引更多的粒子构成更大的 The authors studied the radiative forces between two spherical particles immersed in a liquid subject to a sound field and obtained an expression of useful work describing their interaction. This work is defined as W min (binding energy). Multiparticles are in contact with each other, and the center line is perpendicular to the vibration direction of the sound field in which W_ (min) is generated. When W_ (min) is large enough, the doublet of two particles will attract more particles to make larger