A.非對稱順銑 B.非對稱逆銑 C.非對稱銑削 D.對稱順銑
A.n=πυcD/1000 B.n=1000πυcD C.υc=πnD/1000 D.υc=1000πnD
A.1° B.9° C.18° D.36°