机械类英文求翻译
在加拿大 1.6.C Mechanical Valves (Gate, Globe, Check, Ball, Plug, Butterfly Operators/Actuators) 6.C.1 Onshore Valve Manufacturer 6.D Pipe Fittings/ Flanges (Stainless Steel/ Low Alloy/ Other Metal (Duplex/ Clad)/ Non metal) support 8.D Loading Arms/...华人论坛