基本解釋[鉄路][機(jī)] 節(jié)制閥，調(diào)節(jié)閥；堦段制動閥詞組短語短語graduating g valve spring 節(jié)制閥彈簧graduating g valve 節(jié)制閥graduating valve spring [鉄路][機(jī)]節(jié)制閥彈簧;遞開閥簧equalizing graduating valve 均衡遞動閥;均衡遞開閥graduating valve lever 遞開閥桿graduating valve更多詞組專業(yè)釋義交通運(yùn)輸工程節(jié)制閥