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过渡曲线对柱塞的运动特性及泵的加工工艺等均有重要影响。本文着重讨论了余弦过渡曲线的性质，过渡曲线范围角的确定方法，并给出了导轨曲线的方程式。
The transition curve has important influence on the movement characteristics of the plunger and the processing technology of the pump. This article focuses on the nature of the cosine transition curve, the method of determining the angle of the transition curve, and gives the equation of the curve of the guide.