acoustic timing machine

例句：

1. 1.This acoustic timing machine is used to measure the time of sound waves.
   这个声学计时机是用来测量声波时间的。
2. 2.The acoustic timing machine was used in the construction of the bridge.
   声学计时机在桥梁建设中被使用。
3. 3. The acoustic timing machine helped us to accurately record the duration of the performance.
   声学计时机帮助我们准确地记录了表演的持续时间。