The geometric meaning for the parametric equation of ellipse is a familiar thing (See example 1).
2
利用椭圆的参数方程，给出了以等分角度为增量的绘椭圆的一种算法，并分析了算法的误差。
This paper makes use of the elliptical parameter equation, present a generation algorithm of ellipse with division Angle increments, and makes error analysis.
3
基于这种裂纹单元，作者引入椭圆参数方程，推出一种计算裂纹前缘点应力强度因子的新方法。
Based on this kind of crack element, and by introducing parametric equation of ellipse, a new method for estimating stress intensity factor is proposed.
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