短語詞組短語Butterfly Valve Control System 蝶閥控制系統(tǒng)Butterfly Valve Control 蝶閥控制hydraulic control butterfly valve 液控蝶閥Electric control butterfly valve 進口電動調(diào)節(jié)蝶閥Control Butterfly Valve 控制蝶閥hydraulic control buffer butterfly valve 液控緩閉蝶閥hydraulic control check butterfly valve 液控止回蝶閥 返回 butterfly control valve