acoustic emission spectrum

例句：

1. 1. The acousticemission spectrum of the earthquake is being studiedto better understand its source.
   正在研究地震的声发射谱，以更好地了解其来源。
2. 2. The acoustic emission spectrum shows thatthe fault is located at a depth ofabout 5 kilometers.
   声发射谱显示，该断层位于大约5公里深处。
3. 3. The acoustic emission spectrum helps us toidentify the type of rock that caused theearthquake.
   声发射谱帮助我们识别引起地震的岩石类型。