acoustic load

例句：

1. 1. The acoustic load of the building is very high.
   这座建筑的声学负载非常高。
2. 2. The acoustic load of the air is affected by the temperature and humidity.
   空气的声学负载受到温度和湿度的影响。
3. 3. The acoustic load of the speaker is low, which makes it easy to hear the voice.
   扬声器的声学负载很低，这使得人们很容易听到声音。