边缘效应
指表面边缘（周边）处的声学效应与同一表面内部的效应不同的现象。
例如，下图（引自 Young，第 15 页；25 kHz、44.5 微米、24 °C 水）表明，周边处的空化冲蚀明显轻于变幅杆端面的其余部分。
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Edge effect
An effect whereby the acoustid effect at the edge (periphery) of a surface differs from that at the interior of the same surface.
For example, the figure below (from Young, p. 15; 25 kHz, 44.5 microns, 24 °C water) shows that the cavitation erosion at the periphery is significantly less than on the remainder of the horn's face.
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