sound energy reflection coefficient

例句：

1. 1. The sound energy reflection coefficientof the material is very high.
   这种材料的声能反射系数非常高。
2. 2. Thesound energy reflection coefficient isan important factor in determining thequality of a recording.
   声能反射系数是决定录音质量的一个重要因素。
3. 3. Thesound energy reflection coefficient can be used tomeasure the efficiency of a microphone.
   声能反射系数可以用来测量麦克风的效率。