
Bs En 60534-8-4 Ed 3.0 - Industrial-Process Control Valves - Part 8-4: Noise Considerations - Prediction Of Noise Generated By Hydrodynamic Flow
出版:British Standards Institution

專家解讀視頻
Bs En 60534-8-4 Ed 3.0 - Industrial-Process Control Valves - Part 8-4: Noise Considerations - Prediction Of Noise Generated By Hydrodynamic Flow
出版:British Standards Institution
專家解讀視頻