A.法剖面B.基面C.前刀面D.副后刀面
A.必是間歇運(yùn)動(dòng)B.金屬不斷投入切削的運(yùn)動(dòng)C.消耗功率多D.受力大
A.5%~50% B.3.33%~10% C.7.33%~20% D.15%~40%