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为什么地球长半轴选用“6378245”这个数字 #13

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@zhaozilongwhu

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@zhaozilongwhu

6378245 是克拉索夫斯基椭球定义的地球长半轴长度,这是一个很老的地球参考椭球参数,请问这里为什么选用这个椭球参数?

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