local pneumatic process 局部气压法

pneumatic steelmaking process 空气转炉炼钢法

Pneumatic industrial process control valves 气动调节阀

pneumatic cracking process 移动床催化裂化过程

pneumatic stirring process 气搅拌法 ; 气动搅拌法

pneumatic-mechanical process 风动机械法

pneumatic caisson process 压气沉箱法

pneumatic charging process 压气装药

The Pneumatic Conveying Process 风送工艺流程