g54g90g0x-250y250m3s800g43h1z100z10z-20g1x-200y200f200g2x0y0r200g3x200y-200r200g01x220y-200z10g1x250y200g1x200y200g2x0y0r200g3x-200y-200r200g0z10m30宏程序 椭圆加工（编程思路:段直线代替曲线）例1 整椭圆轨迹线加工（假定加工深度2mm)。