文中概述了有限元束传播方法的基本思想和方法。
The basic idea of the finite element beam propagation method (FE-BPM) is described.
用该种方法可以同时激发出传播方向相反的两束声。
Two ultrasonic beams in opposite direction can be excited simultaneously.
用该种方法可以同时激发出传播方向相反的两束声。
Two ultrasonic beams in opposite direction can be excited simultaneously.
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