短語詞組短語backup guide roll 支導(dǎo)輥backup p roll grinding machine 支承輥磨床backup roll grinding machine 支承輥磨床backup roll arbor 支承輥心軸backup roll chocks 支承輥軸承座ND BTR BACKUP ROLL 二次轉(zhuǎn)印上輥Backup roll chock 支撐輥軸承座;支承輥軸承盒forged steel backup roll 鍛鋼支撐輥backup roll wheel 支承輥輪 返回 backup roll