parting off meaning in English

分切；分割；切断
切断；分切；分割
切断工具

Turning tools with speed steel inserts . parting off turning tools
高速钢合金车床刀具.切槽刀
Turning tools with speed steel inserts . right angle parting off turning tools
高速钢合金车床刀具.扩孔镗刀
Your parents simply cut the green / black part off the bread and say " eat anyway . it ' s still good .
你父母会切掉面包长霉变成绿色或黑色的部分然后说“吃吧，这还是好的。 ”