1) amount of equivalent cutting edges

等效切削刃数
3) cutting lip

钻刃切削刃
4) cutting edge

切削刃
1.
Local Stress Analysis on the Cutting Edge of the Micro-Cutting Tool

微细切削刀具切削刃局部应力分析
5) Main cutting edge

主切削刃
1.
This article focused on drilling in the actual processing of microporous main cutting edge of micro-drill breaks and microporous processing accuracy.
集中论述了在实际微孔钻削加工过程中主切削刃对微钻头折断和微孔加工精度的影响。
6) Double-edge machining

双刃切削
补充资料:比等效百万吨数