6370/6400*85=84

来源: jinjing 于 2011-09-15 10:17:40 [档案] [旧帖] [给我悄悄话] 阅读数 : (0 bytes)

回答: Thx, my earth radius is too long ,if it is 6370km,the answer is 由 jinjing 于 2011-09-15 10:16:25

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