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che xiao duo xian luo wen zhong yu dao de wen ti ji jie jue fang fa
Pages: 140-141
Year: Issue:  21
Journal: Occupation

Abstract: 在各种机械产品中,很多零件都带有螺纹。螺纹用途十分广泛,有的起连接(或固定)作用,有的起传递动力作用,也有的起减速运动作用,笔者主要以多线螺纹来论述该问题。多线螺纹的各螺旋线沿轴向等距分布,解决等距分布的问题叫分头(分线),
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