短语词组短语Other Billets 其它坯rod billets 棒坯tube billets 管坯alloy billets 合金坯料1Cr12Mo billets Cr12Mo 方钢roll billets 轧辊hollow billets 空心管坯Main Billets 主营钢坯billet caster 方坯连铸机steel billet 钢坯sheet billet n . 薄板坯;钢板坯 返回 billets