阿肯肯肯_49265 发表于 2017-9-26 09:47:48

IEC 60534-8-3:2000

IEC 60534-8-3:2000Industrial-process control valves –Part 8-3:
Noise considerations –
Control valve aerodynamic noise prediction method




admin 发表于 2017-9-27 09:53:01

谢谢您的分享,金币已奖励!
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