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《铁路曲线测设用表》第三册第四表缓和曲线函数的计算中,二院康纪同同志和铁一局刘冬初同志都提出了以级数展开的形式进行表达,以利现場计算和保证精度。本刊刊登刘冬初同志“对《铁路曲线測设用表》的几点意见”,文中关于以图表形式表达“圓曲线弧弦差与半径关系曲线”,在缩影后编进“曲线表”中,其精度及使用效果如何,請从事铁路測量工作的同志提出宝贵意见,以便“曲线表”再版时参考。
In the calculation of the easing curve function of the fourth table of the third table of the “Railway Curve Surveying and Mapping Table”, Comrade Kang Jitong and the Comrade Liu Dongchu of the First Iron Bureau proposed the expression in stages to expand the field calculation and assurance Accuracy. The publication of Comrade Liu Dongchu’s “Several Opinions on the Use of Tables for the Measurement and Mapping of Railway Curves”, in the article on the expression of “the curve of arc-arc difference and radius of a circular curve” in the form of a graph, The accuracy and effectiveness of the use of how to do the work of the railway comrades invaluable advice, so that “curve table” reprint for reference.