infrasonic sound

例句：

1. 1.The aircraft's engine produces infrasonic sounds that can be heard from a distance.
   飞机引擎产生的超音速声波可以从远处听到。
2. 2. Infrasonic sounds are used to detect underground structures.
   超音速声波被用来探测地下结构。
3. 3. Researchers have discovered new ways to measure infrasonic sounds.
   研究人员发现了新的测量超音速声波的方法。