短語詞組短語leaf mitral valve 釋義二尖瓣后葉Two -leaf aortic valve 二葉式主動脈瓣Leaf spring valve and method 發(fā)明名稱posterior -leaf mitral valve 二尖瓣后葉leaf of descartes valve 瓣狀閥門valve leaf 閥片 返回 leaf valve