短語(yǔ)詞組短語(yǔ)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?；yRotate -Rising stem 鏇轉(zhuǎn)陞降閥桿Non -rising stem NRS 非陞桿式 返回 rising stem