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众所周知，圆锥曲线的离心率ｅ是用来刻画圆锥曲线形状的一个重要特征量，不同的圆锥曲线有着不同的离心率；椭圆型圆锥曲线 ０＜ｅ＜１抛物线型圆锥曲线 ｅ＝１双曲线型圆锥曲线 ｅ＞１笔者通过研究发现，圆锥曲线还存在着一个与离心率ｅ相类似的重要性质；为了叙述方便，
It is well known that the eccentricity e of the conic section is an important feature used to describe the shape of the conic section. Different conic sections have different eccentricities; the elliptic conic section 01 The author found that the conic curve still has an important property similar to the eccentricity e; for the sake of narrative convenience,