This paper gives a calculating method of the error of rectangle spline hob profile designed on the theory of plane engagement, with the errors of some hobs calculated.
此文给出了按平面啮合原理设计矩形花键滚刀齿形的误差计算方法，并计算了几种规格的滚刀的齿形误差。
The basic principles and calculating method of measuring the Angle error of triple prism are presented.
本文论述了测量三垂面棱镜角度误差的基本原理和计算方法。
A method of calculating error of estimated parameter is presented.
提出了估计参数误差的计算方法。
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