specific sound energy flux

例句：

1. 1. The study of acoustics is essential for understanding the propagation of sound in a medium.
   声学研究对于理解声音在介质中的传播至关重要。
2. 2.In this experiment, we measured the specific sound energy flux at different distances from the source.
   在这个实验中，我们测量了从源不同距离处的能量流。
3. 3.The specific sound energy flux was used to calculate the efficiency of the transmission system.
   特定声能流被用来计算传输系统的效率。