【判断题】【消耗次数:1】
车削不锈钢工件材料时,应采用钨钴钛类硬质合金刀具材料。()
正确
错误
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③  钨钴钛钽类
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【判断题】 切削不锈钢材料时,应采用YT类硬质合金刀具。()
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【单选题】 高速钢刀具的合理前角( )硬质合金刀具的合理前角。
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