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坐标是什么意思
更新时间: 2021-03-09 19:48:01  

1、坐标 ,数学名词。是指为确定天球上某一点的位置,在天球上建立的球面坐标系。

2、有两个基本要素:(1)基本平面;由天球上某一选定的大圆所确定;大圆称为基圈,基圈的两个几何极之一,作为球面坐标系的极。(2)主点,又称原点;由天球上某一选定的过坐标系极点的大圆与基圈所产生的交点所确定。

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