...标,所谓A级曲面的定义,是必须满足相 邻曲面间的间隙在0.005mm(有些汽车厂商甚至要求到0.001mm),切率改变(tangency change)在0.16°以下,曲率改变(curvature change)在0.005°以下,符合这样的标准 才能确保钣件的环境反射不会有问题。
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当然,现在离明年11月份的大选还有14个月,所有这一切都可能发生改变,经济可能增长,失业率可能下降。
All this could change in the 14 months before the election in November of next year, of course. Growth could pick up, and unemployment could start to fall.
本文提出了一种通过改变滚刀每个刀齿的切削厚度与切削宽度的,新型的高生产率滚刀—轮切式齿轮滚刀。
A new type of productive hob which can change the cut width and depth on each tooth of the hob is presented in this paper. It's title is turn cutting hob.
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