ellipse
ellipse 英 [ɪˈlɪps] 美 [ɪˈlɪps]
n. [数] 椭圆形，[数] 椭圆
名词复数:ellipses
- An ellipse is a closed-plane curve that results from the intersection of a plane cutting through a cone. In other words, it’s an oval.
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- n. [数] 椭圆形，[数] 椭圆
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1. If this is an ellipse around the Earth, then this would be perigee and this would be apogee.
如果这是一个围绕,地球的椭圆形轨道,那么这是近地点，这是远地点。
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2. Cutting thecone at various angles gives you various shapes of ellipse. Until theangle of your cut exceeds the angle of the side of the cone.
如果你从侧面不同角度切割圆锥，便会有不同样子的椭圆，除非，直到你的切割角度超过圆锥体侧边的角度。
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3. Another name foran ellipse is an oval.
椭圆的另一个名字叫“卵形的”。
- ellipse (n.) 1753, from French ellipse (17c.), from Latin ellipsis "ellipse," also, "a falling short, deficit," from Greek elleipsis (see ellipsis). So called because the conic section of the cutting plane makes a smaller angle with the base than does the side of the cone, hence, a "falling short." The Greek word was first applied by Apollonius of Perga (3c. B.C.E.). to the curve which previously had been called the section of the acute-angled cone, but the word earlier had been technically applied to a rectangle one of whose sides coincides with a part of a given line (Euclid, VI. 27).
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