举报
along0325 wrote: AUTOCAD里做,导入即可
v-sen wrote: 把椭圆分成四条|||||r=sqrt(2)-1的二次曲线来做!!!可随住中心线转任意角度!!!!!!!!!!!
hhjun38299 wrote: 分二次做,先绘一水平或垂直方向的椭圆,完成后再将椭圆无复制的旋转你所需要的角度。
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