sound transmission loss的用法和樣例：
例句
- The lamp shade adopts Pyrex with good light penetration and less penetration loss.
玻璃罩材料為耐熱玻璃，透光性能好，透射損失小。 - In the environment with lower noise level, the earplug will decrease its sound insulation factor accordingly to ensure the useful voice can be heard.
在低聲級環(huán)境中，其隔音量又足夠低，可以保證能接收到一些有用的聲信號。
