查询词典 conic section

In the direction of flow between the first cross section (50) of flow and the second cross section (52) of flow, a third cross section (54) of flow is formed between the valve member (40) and the valve housing (36), said third cross section (54) of flow being larger than the first cross section (50) of flow and the second cross section (52) of flow.

在流动方向上在第一通流横截面(50)与第二通流横截面(52)之间在阀元件(40)与阀壳体(36)之间形成第三通流横截面(54)，该第三通流横截面大于第一通流横截面(50)和第二通流横截面(52)。

We give three constraints of absolute conic images and use these constraints to evaluate absolute conic images and then to recover Euclidean reconstruction from projective reconstruction.

总结了三种关于绝对二次曲线的像的约束，并利用这些约束求解绝对二次曲线的像，进而实现从仿射重构恢复欧氏重构。

This paper established a new kind of relation on projection——conic projection analogue by introducing the latitude circle and longitude circle analogues, then discussed the best choice of the conic vertex angle in this projection, and found the mathematical model and the applicable scope of this projection.

摘 要：本文通过引入类纬圈和类经圈，建立了一种新的投影关系——类圆锥投影，进而探讨了类圆锥投影中圆锥顶角的最佳选择，找到了类圆锥投影的数学模型和适用范围。

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。

In this paper, based on the conjugate function and the dual programming of convex programming, with the dual cone, to conic programming, the dual programming is fully discussed, the expression of the dual programming is educed, the main dualities are proved, and the dualities of the familiar conic programming are studied.

以共轭函数和凸规划的对偶规划为基础，利用对偶锥的概念，全面讨论了一般锥规划的对偶问题，严格推导出锥规划对偶规划的表示形式，给出了锥规划的主要对偶性质，并用这些结果研究了常见锥规划的对偶性。

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。

He paid $5,000 for this cupcake.

他我这个纸杯蛋糕花了5000美元。

I mean, if you want to, that is

我的意思是，如果你们想吃的话。