When P, mouth without compressed air, in spring force and A mouth (chamber) under the action of more than strength;

当P口无压缩空气时，在弹簧力和A 口（腔）余气力作用下；

youdao

The compressed spring when force is removed, returns to its original position, the distance that a spring compressed under force depends on the rate of the spring.

当压紧力撤除时，被压紧的弹簧恢复到初始状态，在压力作用下，弹簧的压缩变形量取决于该弹簧的刚度。

youdao

The compressed spring when force is removed, returns to its original position, the distance that a spring compressed under force depends on the rate of the spring.

当压紧力撤除时，被压紧的弹簧恢复到初始状态，在压力作用下，弹簧的压缩变形量取决于该弹簧的刚度。

youdao