网络释义专业释义英英释义
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二次曲线 - 引用次数：2 参考来源 - 纳米级微定位平台的设计及实验研究
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圆锥截线锥形断面圆锥形截面锥形截线
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二次曲线圆锥截线圆锥曲鉝圆锥曲线圆锥曲二次曲
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圆锥曲线锥形截线
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柯林斯英汉双解大词典
conic section
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1.
N one of a group of curves formed by the intersection of a plane and a right circular cone. It is either a circle, ellipse, parabola, or hyperbola, depending on the eccentricity, e, which is constant for a particular curve e = 0 for a circle; e<1 for an ellipse; e = 1 for a parabola; e>1 for a hyperbola 圆锥曲线 (Often shortened to conic)
双语例句
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Given a hexagon inscribed in a conic section, the three pairs of the continuations of opposite sides meet on a straight line, called the Pascal line.
已知一个六边形内接于一条圆锥曲线，那么这个六边形对边的交点位于同一条直线上。
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By using transformation thought, this paper obtains the focus chord of all kinds of conic section through analyzing a sample in conic section teaching.
利用变换思想，对圆锥曲线教学中的一道例题进行分析，得出了各种圆锥曲线的焦点弦，并引伸其结论，将圆锥曲线的焦点弦变换为中心弦。
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Thus, we give a make-graph method of conic section on plane with arbitrary point as foci, arbitrary line as directrices and arbitrary positive number as eccentricity.
从而给出了以平面上任意点为焦点、任意直线为准线，任意正数为离心率的圆锥曲线的直接作图方法。
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