At neighbouring points, the eccentricity of the light ellipse is small . 在鄰近的點(diǎn)上,光橢圓的離心率較小。
The moon doesn't describe a circle round the earth, but rather an ellipse . 月球繞地球運(yùn)行的軌道不是渾圓的,而是橢圓的。
The earth revolves around the sun in an ellipse with the sun at one of the foci . 地球在以太陽為焦點(diǎn)的橢圓上圍繞太陽公轉(zhuǎn)。
Second, since the radius vectors r to the extreme points of the ellipse satisfy(5. 3-12)they are parallel to the two allowed d vectors . 其次,因?yàn)榈綑E圓極值點(diǎn)的徑向矢量r滿足式(53-12),故這兩個(gè)徑向矢量與兩個(gè)允許的D矢量平行。
Structure that defines the boundaries of the ellipse 結(jié)構(gòu),它定義橢圓的邊界。
Adds three lines , a rectangle , and an ellipse 添加三段直線、一個(gè)矩形和一個(gè)橢圓。
How to : draw a filled ellipse on a windows form >如何:在windows窗體上繪制實(shí)心橢圓
Create an ellipse using elliptical shape tool 使用橢圓工具再創(chuàng)建一個(gè)橢圓。
The efficiency of ellipse circulation for ideal gas 理想氣體橢圓循環(huán)的效率
The width of the bounding rectangle that defines the ellipse 定義橢圓的邊框的寬度。
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" 同義詞:oval,
百科解釋
In mathematics, an ellipse (from Greek ?λλειψι? elleipsis, a "falling short") is a plane curve that results from the intersection of a cone by a plane in a way that produces a closed curve. Circles are special cases of ellipses, obtained when the cutting plane is orthogonal to the cone's axis.