two-way movement

The fast open-door mechanism can make the door two-way movement.

快开门机构能够使门双向移动。

Novel work roll double-directional shifting technology increases profile control ability of four-h cold steel mills significantly, decreases edge reduction during strip rolling operation and prolongs the service lifetime of rolls.

新型四辊冷轧机工作辊双向移动技术极大地提高了板形控制能力,降低了板带轧制过程中产生的边降,延长了轧辊使用周期,可广泛应用于板带轧制。