短語詞組短語ono -rising-stem valve 暗桿閥門non -rising stem valve 不升桿式閥;暗桿閥rising -stem double-disk parallel slide valve 明桿平行式雙閘滑閥Rotate -Rising stem 旋轉(zhuǎn)升降閥桿Non -rising stem NRS 非升桿式 返回 rising stem