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对回旋线平行线的几何性质进行了分析,在此基础上推导了对称基本型平曲线最大横净距的精确计算公式,并应用Excel软件给出了计算示例,可供平面视距检验参考应用。
The geometric properties of the parallel lines of the revolving line are analyzed. Based on this, the exact formula for calculating the maximum transversal distance of the symmetrical basic flat curve is deduced. The calculation example is given by using the Excel software, which can be used for the reference application of the planar line of sight test .