该方法不仅具有作图法的度和实验意义，而且还有线性回归法的数学意义。
This method has not only the precision of the charting method and the experimental meaning, but also the mathematical meaning of the linear regression method.
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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