1、The invention aims to develop the sulfur hexafluoride gas controllable multi-pass ball valve group.
本發(fā)明的目的是研制一種六氟化硫氣體可控式多通球閥組。

2、In general, WILLIAMSONs trunnion ball valve features the front ball sealing design structure.
威廉姆森固定球閥一般采用球前閥座密封結(jié)構(gòu)。

3、Technical Retrofit of ALFA Ball Valve in Ethylene Plant
乙烯裝置ALFA開關(guān)球閥的技術(shù)改造

4、Ball valve for opening and closing the main pipe and equipment used media.
球閥主要供開啟和關(guān)閉管道和設(shè)備介質(zhì)之用。

ball valve翻譯