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概述了航空涡轮冷却器用超精密级滚珠轴承预紧结构的功能，设计的基本原则，主要结构形成和预紧力的２种计算方法．
This paper summarizes the functions, basic design principles, main structure formation and prestressing two kinds of calculation methods of ultraprecision ball bearing pretensioning structure for the aviation turbine cooler.