英[?b?t?flai v?lv] 美[?b?t?fla? v?lv]
[詞典] 蝶閥; 蝶形閥;
[例句]Butterfly valves are commonly used for clip-on butterfly valve and two Flanged butterflyvalve.
常用的蝶閥有對夾式蝶閥和法蘭式蝶閥兩種。