用等间距法直线逼近非圆曲线易于实现手工宏程序编程、改变逼近精度,且可读性强。针对如何确定间距的问题,结合等弦长法提出了一种新方法。通过实例验证该方法的有效性和可行性,具有很高的实用和参考价值。 Using non-circular curve of straight line approximation with equal spacing method is easy to realize manual macro programming, change approximation accuracy and readability. Aiming at the problem of how to determine the distance, a new method is proposed based on the chord length method. The validity and feasibility of the method are verified by examples, which is of high practical value and reference value.