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椭圆
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椭圆ellipse 【计】 ellipse 相关词组:回转椭圆体椭圆的椭圆率椭圆体椭圆体的椭圆形椭圆形的椭圆形地椭圆形轮廓椭圆tuǒyuán[ellipse elliptic] 一种规则的卵形线;特指平面两定点(焦点)的距离之和为一常数的所有点的轨迹
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更新时间:2026/9/20 11:05:49