limiting drawing ratio的意思|示意

Using variable blank holder force can remarkably improve the forming performance, and the limiting drawing ratio would reach 5.0.

采用变压边力可以明显提高板材的冲压性能，极限拉深比将达到5.0。

Through the limiting drawing ratio tests, the influences of rolling, annealing, blank holder force, drawing gap, drawing temperature and speed on the forming performance were investigated.

通过极限拉伸比试验，研究了轧制、退火、拉伸温度、拉伸速度、拉延间隙以及压边力等工艺因素对镁合金板材成形性能的影响。