問題詳情
45. Which of the following property NOT belongs to coated tools coatings:
(A) lower friction,
(B) higherresistance to wear and cracking,
(C) higher hot hardness and impact resistance,
(D) acting as a diffusionbarrier between the tool and the chip, or
(E) none of the above?
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增