A Novel Pneumatic ( Hydraulic) Speed Regulating System: The Application of the Differential Flow Adjustable Shuttle Valve in Speed Regulating System 一种新型气(液)动速度调节系统&差流可调梭阀在球阀速度调节系统中的应用
Influence of Working Property of Pneumatic Diaphragm Regulating Valve on Regulating System 气动薄膜调节阀工作特性对调节系统的影响
Repairing of imported pneumatic diaphragm regulating valve 进口气动隔膜式调节阀的检修