Model of self-generation of angular positioning precision during mutual lapping machining process for end-tooth indexing table was built. Simulation results agree with industrial machining practice.

建立了端齿盘对研加工过程中分度精度自生成的模型，仿真结果符合工业加工实际。

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The growing popularity of this sort of indexing can become a self-fulfilling prophecy as a disproportionately enormous amount of money flows into the large companies that dominate the index.

ECONOMIST: Robert Wade replies