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字词 椭圆
释义 椭圆tuǒyuán
1.平面上的动点A到两个定点F, F′的距离的和等于一个常数时,这个动点A的轨迹,就是椭圆。两个定点F, F′叫做椭圆的焦点。{ellipse. When the sum of the distances between a moving point A on a plane to the two fixed points F and F′equals a constant, the locus of the moving point A is called an oval or ellipse, and the two fixed points F and F′are its focal points.}
2.通常也指椭圆体。{(commonly referring to) ellipsoid}
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更新时间:2025/1/23 14:28:38