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(3)
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Wallis 圆锥边
另请参阅
直纹锥面使用 Wolfram|Alpha 探索
参考文献
Gray, A. Modern Differential Geometry of Curves and Surfaces with Mathematica, 2nd ed. Boca Raton, FL: CRC Press, pp. 454-455, 1997.请引用为
Weisstein, Eric W. "Wallis 圆锥边。" 来自 MathWorld——Wolfram Web 资源。 https://mathworld.net.cn/WallissConicalEdge.html