cross piercing
短语词组
- cross roll piercing 斜轧穿孔
- the cross rolling piercing 斜轧穿孔
- two roll cross piercing 二辊斜轧穿孔
- hot cross piercing 热轧穿孔
- cross piercing process 斜轧穿孔工艺
- two -cross-roll piercing process 二辊斜轧穿孔
- piercing screwdriver Cross -head 穿心起子十字 返回 cross piercing