Geometrical relationship between clearance and contact angle was explored and calculation method of clearance was modified by measuring, calculating and analyzing of three points angular contact ball bearing and four points angular contact ball bearings.% 通过对三点和四点角接触球轴承进行测量、计算、分析，探索游隙与接触角的几何关系，对其计算方法进行了改进。
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