acoustic emission source

例句：

1. 1. The acoustic emission source is responsiblefor the sound waves that travel through theair.
   声发射源负责传播通过空气的声波。
2. 2. Acoustic emission sourcesare often used in seismic monitoringto detect underground faults.
   声发射源常用于地震监测，以检测地下断层。
3. 3. The acoustic emission source was foundto be located at a depth of about50 meters below the surface.
   声发射源被发现位于地表下约50米处。