TomKim 发表于 2020-10-13 16:55:11

IEC 60534-2-3 Industrial Process Control Valves

IEC 60534-2-3 Industrial Process Control Valves
Part 2-3: Flow capacity – Test procedures  



Second edition
1997-12


admin 发表于 2020-10-27 17:30:08

谢谢您的分享,金币已奖励!
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