短語詞組短語valve e flap 閥瓣Valve Flap for Control Valve 控制閥用主閥瓣flap valve [機]瓣閥;拍門;蝶閥;鉸鏈閥flap valve grid 進氣活門柵non return flap valve 止回瓣閥mica flap valve [建]云母片截門flap valve assembly 活門柵pneumatic film flap valve 氣動薄膜瓣閥;氣動薄膜蝶閥gastroesophageal flap valve 胃食管閥瓣;證實胃食管閥瓣 返回 valve flap