Ellipse

(noun.) a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it; 'the sums of the distances from the foci to any point on an ellipse is constant'.

坎迪编辑

• Halley found that Newton had already determined that the form of the orbit would be an ellipse. 李贝. 西洋科学史.
• It is at a point which is a focus of the ellipse. 赫伯特·乔治·威尔斯. 世界史纲.
• These curves--the ellipse, the parabola, the hyperb ola--play a large part in the subsequent history of astronomy and mechanics. 李贝. 西洋科学史.
• As the ellipse becomes most nearly circular, then the focus becomes most nearly the centre. 赫伯特·乔治·威尔斯. 世界史纲.

手打:柴门霍夫