常見例句雙語例句Equipped with softly and mechanically sealing ball valves.裝有柔性和剛性密封的球閥。In general, WILLIAMSONs trunnion ball valve features the front ball sealing design structure.威廉姆森固定球閥一般採用球前閥座密封結(jié)搆。Being impact in structure and extensive in common use. the cutting off V type ball valve features perfect sealing property and may replace gate valve, globe valve and general ball valve.截?cái)嘈蚔型球閥密封性能好，可取代牐閥、截止閥及普通球閥等多種閥門。 返回 ball sealing