将平面等角螺旋天线投影到半球面和部分球面上，得到半球面螺旋天线和部分球面螺旋天线两种新型球面螺旋天线。
Two novel spherical helical antennas are designed by projecting the planar equiangular spiral antenna onto the surfaces of hemisphere and partial sphere.
已知以原点为心，以a为半径的球面，也可以说是半球面或是球面的一部分。
Let's say that I gave you a sphere of radius a centered at the origin, or maybe just half of that sphere or some portion of it.
总是可以找到球面的一部分以它为界。
I can always find a portion of the sphere that's bounded by it.
我们建立有两个变量φ和θ的球面的参数方程,它们恰好是,球坐标系统的一部分。
We are finding a parametric equation for the sphere using two variables phi and theta which happen to be part of the spherical coordinate system.
如利用的是整个大圆的积分，得到的是球面上任何点及其对蹠点上函数的平均值，或者说得到的是球面上函数的偶对称部分。
If the whole integrals on the great circle are used, the average of the function values for any point and its antipodal can be obtained.
球面网格系统主要由球面网格构建和网格单元地址编码两个部分组成。
The sphere grid system is mainly composed of two parts, which are the construction of sphere grids and the address coding of the grid units.
球面离散格网模型单元的面积、形状是否相似关系到模型的精度，因此定量分析单元的几何变形、分布规律等是格网模型建模的重要组成部分。
Whether the area and the shape of the discrete global grids model units are similar to each other affects the precision of the model.
本文所做的主要研究工作有以下三部分：首先研究球面网格基础引擎的设计方法和实现技术。
This paper has done the main work of three parts. First examine the sphere mesh-based engine design methods and implementation techniques.
本发明实施例公开了一种非球面透镜的设计方法，包括：采用一半径为R1的面作为非球面透镜的球面部分；
The invention embodiment discloses a design method of an aspherical lens, which comprises: the surface with the semidiameter of R1 is taken as the spherical surface part of the aspherical lens;
本发明实施例公开了一种非球面透镜的设计方法，包括：采用一半径为R1的面作为非球面透镜的球面部分；
The invention embodiment discloses a design method of an aspherical lens, which comprises: the surface with the semidiameter of R1 is taken as the spherical surface part of the aspherical lens;
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