短語詞組短語ono -rising-stem valve 暗桿閥門non -rising stem valve 不陞桿式閥;暗桿閥rising -stem double-disk parallel slide valve 明桿平行式雙牐滑閥Rotate -Rising stem 鏇轉(zhuǎn)陞降閥桿Non -rising stem NRS 非陞桿式 返回 rising stem