acoustic power

例句：

1. 1. The sound of the piano is a source of acoustical power in this room.
   钢琴的声音是这个房间声学能量的来源。
2. 2. Acoustical power is a crucial factor in determining the efficiency of an engine.
   声学功率是决定发动机效率的一个重要因素。
3. 3. The acoustical power of a speaker can be measured using an audiometer.
   扬声器的声学功率可以通过音频计来测量。