
Revision Of Iec 60534-3-2: Industrial-process Control Valves - Part 3: Dimensions; Section 2: Face-to-face Dimensions For Rotary Control Valves
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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Revision Of Iec 60534-3-2: Industrial-process Control Valves - Part 3: Dimensions; Section 2: Face-to-face Dimensions For Rotary Control Valves
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频