Yes.Only estimat,we don't know the time,it has relation with the

來源: jinjing 於 2011-08-15 16:33:51 [] [舊帖] [給我悄悄話] 閱讀數 : (0 bytes)
回答: 0.4%? 由 貧論員 於 2011-08-15 12:07:10

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• It has relation with the rotation of the Earth. -jinjing- ♀ 給 jinjing 發送悄悄話 (0 bytes) () 08/15/2011 postreply 16:50:46

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