查询词典 conic function

We reseach the equation of conic section and obtain the equation which can give all plane conic section .

探讨二次曲线的方程，构造了一个可以表示平面上所有九种二次曲线的方程。

According to the fUndamental theorem of coniC In projective geometry any five points can decide one conic section .

在射影几何中，二次曲线定理告诉我们任意五点可以决定一条二次曲线。

Accoring to the polar theory of conic section, the characteristics of geometrical graphics concerning the conic section is discussed from following three aspects:the conbination of Point and line, harmony of point range and pencil of line , trace of point and enveloping of straight line.

本文根据二次曲线的配极理论，从点、线的结合性，点列和线束的调和性，点的轨迹和直线的包络三方面研究与二次曲线有关的几何图形的性质。

The ratio of the distance of any point on a conic section from a focus to its distance from the corresponding directrix. This ratio is constant for any particular conic section.

离心率二次曲线上任何一点到焦点的距离与到准线的距离之比对任一特定二次曲线来说，这个比值都是一个常数

Unlike previous approaches that use a single conic as proxy surface in the optimization phase, our method use multiple segments of conic to further reduce the error and guarantee C0 continuity between the conics in the same cone spline surface.

不同於旧有的方法利用单一的圆锥曲面，我们利用多段的圆锥曲面拟合网格以降低误差，并保证同一区块内，圆锥之间的C0连续性，因此我们的演算法可以利用较少的区块，来更精确的拟合网格。

All of these applications show that study on conic optimization is necessary. For detail, we conclude them as follows:The models, foreign and internal study situations on conic optimization and its dual problem are introduced in Chapter one, and we point out the key problem and research matter.Chapter two introduces some primary properties of a cone and its dual cone.

第二部分是应用实践：将所提出的锥规划及其对偶锥规划应用在各个领域，例如最小二乘问题、多项式求解、协方差矩阵估计，以及在其它方面的运用，这些应用无不显示出研究锥规划的必要。

Stylopodium conic or low-conic, rarely depressed; styles short or long, spreading or reflexed (best observed in young or mature fruit).

花柱基圆锥形或者浅圆锥形，很少下凹；花柱短或长，开展或反折(最好在幼果或成熟果上观察)。

This paper mainly discusses the conic trust region subproblem which is a key problem in conic trust region method.

在锥模型信赖域方法中，解锥模型信赖域子问题是关键，因此本文主要研究锥模型信赖域子问题及求解方法。

Inflorescence glabrous or matted ferruginous villous and shortly whitish tomentose (whitish hairs mostly on pedicels); peduncle 2.5-5 cm; thyrse conic or cylindric-conic, 10-30 cm, 6-10 cm wide at base; branches 2.5-5 cm, 4-12-flowered; pedicels 3-6 mm.

花序无毛或簇生具铁锈色长柔毛和短带白色被绒毛的(带白色毛多数在花梗上的)；花序梗2.5-5厘米；聚伞圆锥花序圆锥或者圆筒状圆锥形，10-30厘米，6-10厘米宽的在基部；分枝2.5-5厘米，4-12花；花梗3-6毫米。

A general conic curve fitting is achieved with the standard conic curve parameters and translation matrix parameters and rotation matrix parameters.

推导了基于圆锥曲线标准表达形式参数，平移矩阵参数和旋转矩阵参数进行圆锥曲线特征拟合的理论。

Apllied the data of QuickBird-2——the highest resolution remote sensing,and based on the theory and methodology of fractal geometry,we have quantitatively studied remote sensing lineations in Gaolong gold deposit of Guangxi.

采用Quick Brid-2高分辨率卫星遥感数据，通过分形几何学的盒计维数法，定量研究广西高龙金矿区遥感线性构造。

So, sometimes, to change the color can not be your food (referring to the above-mentioned crustacean) has been a sign of boiling over.

所以，有时，来改变颜色，不能你的食物一直是沸腾了的迹象。