三叶虫在房屋周围飞来飞去，发出超声波信号，绘制出房间的地图，以备日后清洁时使用。
The Trilobite scuttles around homes emitting ultrasound signals to create maps of rooms, which are remembered for future cleaning.
庞贝表明正确的超声波信号产生的各种声音都可以听见。
The correct ultrasound signal, Pompei suggests, can produce any kind of audible sound.
介绍了激光超声的机理、光激超声波信号的检测方法及其应用。
Principle and testing method of laser generated ultrasonic and its applications are introduced.
应用推荐