()时,镗刀主偏角要稍小些,适当增加刀尖角,刃倾角取负值,以堆受较大的切削力,提高其 发布时间:2020-06-08 18:27 │ 来源:www.tikuol.com 题型:单项选择题 问题: ()时,镗刀主偏角要稍小些,适当增加刀尖角,刃倾角取负值,以堆受较大的切削力,提高其抗冲击性。A.粗镗B.半精镗C.复合镗D.精镗
题型:单项选择题 Why not join us in the game?()A.OK! I'm comingB.No, you do the sameC.Oh, that's all rightD.Don't mention it 查看答案