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本文研究了表面相互位置精度的实质，从而提出计算的方法和简便的公式。应用这些公式可以评定机械加工工艺过程的方案，以达到保证表面相互位置精度的目的。
In this paper, the essence of surface mutual position accuracy is studied, and the calculation method and simple formula are put forward. Application of these formulas can be assessed mechanical processing program, in order to achieve the purpose of ensuring the accuracy of mutual position of the surface.