a two-sphere system 两球系统
A two-sphere system with a two-lens zero-power corrector placed behind the secondary mirror was discussed.
讨论了双贴合无光焦度校正板放在次镜后的双反射球面系统。
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.
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。
This paper presents a method of arc projective transformation of the fundamental geometric elements on a sphere, and sets up an are projective system for three axial and two axial correspondently.
本文提出了一种球面上基本几何元素的园弧投影变换方法，并建立了三轴及对应的二轴园弧投影体系。
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