中文说明：
可以计算分层介质中的声波的传播特点，计算其反射系数和透射系数。
English Description：
It can be used to calculate the propagation characteristics of sound waves in layered media, and calculate the reflection coefficient and transmission coefficient.
The propagation characteristics, reflection coefficient and transmission coefficient of sound wave i
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中文说明：
可以计算分层介质中的声波的传播特点，计算其反射系数和透射系数。
English Description：
It can be used to calculate the propagation characteristics of sound waves in layered media, and calculate the reflection coefficient and transmission coefficient.