According to the relationship between ellipse and its normal, the analytic equation of ellipse normal solution is built as well as the complicacy of analytic method.
根据椭圆与其法线的几何特征关系建立了求解法线的解析方程，分析了法线问题解析求解的繁杂性。
According to the relationship between ellipse and its normal, the analytic equation of ellipse normal solution is built as well as the complicacy of analytic method.
根据椭圆与其法线的几何特征关系建立了求解法线的解析方程，分析了法线问题解析求解的繁杂性。
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