查询词典 spherical cap

The formulae were derived to calculate the spherical coordinates of any vector after the specimen was rotated any angles around any axis based on the homogenous coordinate theory. An example was put forward to show how to use the formulae to calculate the spherical coordinates of the crystal in the synchrotron radiation topographic analysis.

根据齐次坐标理论导出了单晶体绕样品台任意直线旋转任意角度后晶体中矢量坐标的计算公式，并以晶体同步辐射形貌分析的实例说明了如何利用此公式进行矢量计算。

Probably, during the formation of spherical Au nanocrystals, PVP or PAM can be selectively adsorb on certain crystal planes of Au nanocrystals by the complexing effect between N or O with Au atom, thus leading to the different growth rates at different crystal planes of spherical Au nanocrystals and resulting in the formation of faceted Au nanocrystals and Au nanoplates.

研究表明，多面体和片状Au纳米晶是由球形Au纳米晶转变而来，这个转变是由于在球形Au纳米晶的形成过程中，PVP和PAM借助于其特有的N原子和O原子吸附到Au纳米晶的Au原子上，造成了晶体不同晶面生长速率的差异而导致的结果。

Chaikin algorithm is the simplest discrete curve modeling method.In thepaper planar Chaikin algorithm is generalized into sphere,and the practicability ofthe algorithm as well as the continuous differentiable property of the generatingcurve is proved.It is shown that the curve generated by Chaikin algorithm is apiecewise spherical Bezier curve of second kind of order two.Furthermore,generalspherical corner-cutting algorithms are discussed,and it is pointed out that thecurve generated through corner-cutting has"Spherical Variation DiminishingProperty".3Curve interpolation method restricted on a smooth surface based ontransformation.

Chaikin算法是最简单的离散曲线造型方法，文中将Chaikin算法推广到球面，证明了算法的可行性和生成曲线的连续可微性，指出球面Chaikin算法得到的曲线是分段的二次第二类球面Bezier曲线，并给出了用球面Chaikin算法构造球面插值曲线的算法；进一步，文中讨论了一般的球面割角算法，指出由球面割角算法得到的曲线具有"球面变差缩减性质"。3基于变换的约束在光滑曲面上的曲线插值方法。

Then we re-sampling all signals defined on the surface of the original triangle mesh at the vertices of the spherical subdivision mesh and get a set of discrete geometry signals with subdivision topology which can be compressed by using spherical wavelet.

于是，在参数域内位于细分网格顶点处对定义在参数网格表面上的各种几何信号进行重采样，可得到新的具有细分结构的几何信号近似表示原始几何信号，以此满足球面细分小波对处理对象的细分结构要求，从而使得用球面细分小波对几何信号进行压缩得以实现。

We research the spherical harmonics express of Lambert re- flection and propose a pure image based rendering method to synthesis image under arbitrary illumination condition based on spherical harmonics.

研究了朗伯反射的球调和表示，提出了一种基于球调和函数的任意光照目标图像生成方法。

Geodesic curvature of the pitch curve on spherical surface was introduced as a medium,through which the pitch curve on spherical surface can be changed into equivalent planar pitch curve by numerical computation method.

以曲面上曲线的短程曲率为媒介，导出了球面节曲线伸展成平面当量节曲线的算法。

Take CdS for account, hexagonal spherical CdS with average particle size of 50nm was formed in pyridine, cubic rod-like in 1,6 hexyl diamine, mixtures of cubic and hexagonal spherical particles in biethylamine .

以CdS为例，在吡啶中形成六方相球形CdS纳米晶，平均粒径约为50nm；在1-6已二胺中得到的是棒状立方纤锌矿的CdS；在二乙胺中，得到的是立方和六方的混合相，产物形貌为球形粒子。

In esotropia we found that most cases had spherical hypermetropia of≥+ 2.00D, spherical anisometropia of≥+1.00D, and astigmatic errors of≥+ 0.75D.

共同性内斜视产生的机制，目前虽仍不完全清楚，但约有2邝患者与远视性屁光不正有关'。

On the basis of on the analysis of current spherical spatial data structure, the clew of the spherical spatial basal subdivision mode which uses Snyder equal area projection on the truncated icosahedron DGG is discussed, and then global multi-resolution overlay is obtained by subdividing hierarchically on the initial projection plane according to the hexagonal grid.

在分析当前球面空间数据结构的基础上，讨论了利用Snyder等积投影在二十面体上建立球面空间基础剖分方式的思路，然后在初始投影面上采用六边形格网进行层次细分，获得多分辨率的全球铺盖。

The positioning of bar axis with spherical surface was introduced as well as the making and fabricating precision control of spherical joint and bar ,and the welding technology to prevent the welding deformation.

介绍了电视塔钢结构球形节点的构造特点，各杆件轴线同圆球面交点的定位，球形节点和杆件的下料、组装精度控制以及为减少或防止焊接变形所采取的焊接工艺。

Cable dampener cannot be rolled up but must be hung over the cable.

缆帆不能被卷起，必须保证处于展开状态

"This skylark is a present from my master," he says.

"这只云雀是我主人献上的礼物。"他说。