positive pressure wave

例句：

1. 1. The positive pressure wave caused the door to open automatically.
   正压波使门自动打开。
2. 2.The positive pressure wave was used to create a vacuum in the chamber.
   正压波被用来在腔室中产生真空。
3. 3.The positive pressure wave was detected by the sensors installed on the walls.
   正压波被安装在墙上的传感器检测到。