$10
Industrial-process control valves—Part 3-1:Dimensions—Face-to-face dimensions for flanged,two-way,globe-type,straight pattern and center-to-face dimensions for flanged,two-way,globe-type,angle pattern control valves
IDT IEC 60534-3-1:2000,IDT
全国工业过程测量、控制标准化技术委员会第一分技术委员会
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