久青草国产手机视频免费观看_毛片网站是多少_亚洲视频中文_一区二区高清在线

首頁英語詞典valvevalve英英釋意

valve

英 [v?lv] 美[v?lv]
  • n. 閥;[解剖] 瓣膜;真空管;活門
  • vt. 裝閥于;以活門調節
  • n. (Valve)人名;(俄、芬)瓦爾韋

英英釋意


1. a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
2. device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
3. control consisting of a mechanical device for controlling the flow of a fluid