短語詞組短語changeover r valve 鏇轉(zhuǎn)閥plate type changeover valve 板式轉(zhuǎn)換閥Manual changeover valve 手動切換閥塊changeover valve detail 多曏閥hydraulic changeover valve 液動換曏閥electromagnetic changeover valve 電磁轉(zhuǎn)換閥emergency changeover valve 應(yīng)急轉(zhuǎn)換閥auxiliary changeover valve 輔助切換閥;匡助切換閥;輔佐切換閥ball changeover valve 球形轉(zhuǎn)換閥 返回 changeover valve