主焦点 meaning in Chinese

[光学] meridional focus; primary focus; tangential focus; prime focus; principal focus

That location was called the " prime focus "
这一位置就叫“主焦点” 。
Perhaps for such reasons , the term " prime focus " is increasingly being used in a more general manner : in systems in which there is only one place where there is a focuser - - where an image is formed and you can get at it with an eyepiece or some other equipment - - that location is called the " prime focus "
可能出于这些原因， “主焦点”一词正逐渐被人们以一种更宽泛的方式使用：在只有一个聚焦装置的光学系统中，那个成像的、可以用目镜或其他装置摄取像的位置，就叫做“主焦点” 。