【摘要】 提出曲线间距控制线的概念，进一步确定控制线的表示法、型值点的计算方法，用三次参数样条插值的方法检算车站咽喉曲线间距，检算不合要求时，提出平移和缩短梯线两种修改方法。更多还原

【Abstract】 This paper proposes the concept of the control trace of a curve and its calculating formulas about values of the samples.The separtion distance between two curves is tested by insertion method.Finally,the paper develops an algorithm to correct the graph.更多还原