球面

Descartes had either learned the sine law of refraction from Willebrord Snell (Snell's Law) [6] or had discovered it independently, and this allowed him to quantify spherical aberration.

笛卡儿要么据悉，正弦规律的折射，从willebrord snell [ 6 ]或发现了它独立，这使他能够量化球面像差。

In the paper, on the basis of aggregation of previous studies, the development of optical technology and development trends at home and abroad are introduced, the principle of Fresnel lens is summarized. In accordance with its principle, circle equidistant steps Fresnel lens design is described. And on this basis, based on Fresnel design, also based on a continuous upward spiral of the plane curve concept, incidence surface and the backlight is set up to greet Archimedes - Fresnel lens design formula and the Second parabolic type Fresnel lens design formula, and on this basis, the advantages and disadvantages of the three designs is discussed.

本文在充分了解非球面光学技术在国内外的发展状况和趋势的基础上，同时从菲涅尔透镜的光学原理出发，并根据它的工作原理推导了圆环等距菲涅尔透镜的设计步骤，并在此基础上依据菲涅尔的设计思想，同时依据平面曲线的连续又呈螺旋的构思，推导出了迎光面和背光面阿基米德型菲涅尔透镜的设计公式和二次抛物面型菲涅尔透镜的设计公式，并在此基础上讨论了这三种设计各自的优缺点。

The analytical model SAP2000 constructed for this study uses the exact same size as the steel structure used in actual experiments. As SAP2000 is an engineering structure used to design package software, we only need to input data of the various size, cross section of figured steel and material characteristic. We can further use the build-in link to simulate the motion behavior of spherical sliding isolators including the effective stiffness and the friction coefficient.

研究中所建立之SAP2000分析模型，其尺寸设计和实际试验钢构架完全相同，由於SAP2000软体是工程结构设计用之套装软体，因此我们仅需将钢构架各部位尺寸、型钢断面及材料性质输入即可，并且使用其内建隔震元素来模拟球面摩擦型隔震器之运动行为，其中包含有效劲度、摩擦系数等。

The selection of map projection is very important for the production of maps. Its primary task is to decide the mapping equations for the coordinate conversion from the sphere to the plane.

制作地图过程中，选择投影是一个重要的程序，它主要任务系决定制图区从球面转换至平面的制图方程式。

The ball bearing unit is possible working in the non-concentric condition with the maximum self-correcting angle of 2 degrees.

带座外球面轴承可在两轴承座不同心的情况下工作，最大自动调整角可达2o。

To give you an idea - the maximum deviation of the required parabola for a 30 inch f/3 from the sphere is about 50 wave.

给你一些慨念，壹只 30 英吋口径焦比 f/3 其所需抛物面与球面的最大偏差数是大约 50 波。

This paper concerns submanifolds with constant mean curvature in Euclideanspaces or unit spheres.

本文考虑欧氏空间或单位球面中平均曲率为常数的子流形，主要考虑极小的，即平均曲率为零的子流形。

A sphere mirror was used to replace an off-axial parabolic mirror, and a meniscus lens was introduced to compensate aberrations.

二级折反射系统实现激光束的高倍率扩束，由球面反射镜取代离轴抛物面镜，用一片弯月透镜补偿像差。

Lens, plano-convex lens, double-convex lens, plano-concave lens, double-concave lens, plus/minus Meniscus Lens.

球面镜：平凸透镜、双凸透镜、平凹透镜、双凹透镜、正/负弯月透镜、超半球透镜、金属球面镜、积分器及其他球面胶合镜等。

Main attention is paid on the third part; in this part several kinds of method to physical geodesy regularization problem are discussed, which are Tikhonov regularization, truncated singular value decomposition, biased estimation and least squares collocation.

在经典小波变换的基础上引入了球面小波概念，证明了Possion积分核是小波尺度函数，在尺度离散基础上证明了球外重力场处于一个多尺度空间。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。