本文通过数学论证，介绍一种简便的，精密的椭圆作图法—八心圆法。
Basad on mathematical demonstration, this paper presents a graphic method of "circle ef eight centers" for plotting an ellipse.
本文通过数学论证，介绍一种简便的，精密的椭圆作图法—八心圆法。
Basad on mathematical demonstration, this paper presents a graphic method of "circle ef eight centers" for plotting an ellipse.
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