基本解釋[交通運輸工程]節(jié)流閥片英漢例句雙語例句Butterfly valve is closed parts ( valve flap or disc for disc ), around the valve axis of rotation to achieve the open and close a valve, in the pipeline mainly as shut off and throttling effect.蝶閥是指關(guān)閉件（閥瓣或蝶板）為圓盤，圍繞閥軸旋轉(zhuǎn)來達到開啟與關(guān)閉的一種閥，在管道上主要起切斷和節(jié)流作用。throttling valve disc更多例句詞組短語短語throttling valve disc detail 節(jié)流閥片throttling valve disc更多詞組專業(yè)釋義交通運輸工程節(jié)流閥片