短語詞組短語PIN FOR VALVE 閥門用插頭metering pin carburetor valve 計量閥pin puller control valve 銷拆卸器控制閥PIN FOR DELIVERY VALVE 輸送閥用銷Cotter pin valve 開口銷pin valve opening 針閥開度pin type reversing valve 銷式換向閥metering pin valve 調(diào)節(jié)針閥pin valve rising distance 針閥升程 返回 pin valve