2941| 8
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蜗轮的齿形 |
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点评
我知道大部头的书都是伟人导师所著,我也曾去找过各个截面齿形或者计算公式,对不起先生,没有。不知道先生在教导我的时候,是否看过这个书,我有所怀疑,我推到过这公式,也曾探讨过方法,嘻嘻
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