空气弹簧

通过改变连通储气室数目的方法实现对储气室总容积的控制，油气弹簧的刚度特性也因此得到控制。

ring cushion type pneumatic spring

pneumatic electric converter【自】;pneumo-electrical convertor【自】

pneumatic conveyer

pneumatic roll-engagement mechanism【机】

making for pneumatic tyres

compressed air drive (pneumatic drive)

energy, electric, hydraulic, pneumatic

pneumatic-rapier machine