The way to process non-arc curves was discussed.Illustrating ellipse and sinusoid curves,the coordinate conversion and programming in the process of using macro command were stated.

• 探讨了常见非圆弧曲线的加工方法,并以椭圆及正弦曲线为例,叙述了在使用宏指令加工过程中坐标值的数据转换及程序编制。