Tripe eccentric butterfly valve
Tripe eccentric butterfly valve
Double Flanged Butterfly Valve 是什么
tricentric butterfly valve什么蝶阀啊
Eccentric quarter turn butterfly (or double or triple eccent
lug style butterfly valve这个是哪种蝶阀啊
英语翻译Laminated Metal Seal Butterfly Valve with Enamel Seat Se
请问什么是变送器?英文里用的阀门GLOBE VALVE .和BUTTERFLY VALVE 有什么区别?
valve
请教各位高人:butterfly valve damper是什么阀,怎么译! 谢谢!
英语翻译整句式这样的,specification data sheet of the butterfly valve-1
butterfly 翻译
butterfly effect