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Instead , the rocket uses a pneumatic separation system , which can be tested on the ground .

取而代之的是气动分离系统，它的测试可在地面进行。

The operator can turn the cannons ( and monitors ) , and also to open and close the pneumatic valves ( actuators ) .

操作者可以转动水炮（和监视器），开启和关闭控制水流的气动阀门（制动器）。

They don 't seem pneumatic now , do they ?

简直看不出来是充气的，对吧？

North american pneumatic valves and actuators market .

北美气压阀门及促动器市场。

Luoyang pneumatic drill factory labor service station .

洛阳风动钻具厂劳动服务站。