The paper analyzes the ultimate variables and acquires the relationship and ultimate variables according to the auxiliary dynamic equations of high-speed ball bearing in drilling equipments.

依据钻孔设备高速滚珠轴承动态特性的辅助方程，进行了根本变量的分析，得到了各个方程组变量相互耦合的关系图和根本变量。

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