n. durability
概述了提高凸模耐用度的具体途径。
列出了高耐用度凸模的主要类型及其采用的条件。
Basic types of high endurance punches along with the conditions are presented.
为了提高刀具耐用度，就必须减小后刀面边界磨损。
To improve a tool life in this case, therefore, the flank notch wear must be depressed to generate.
应用推荐