咦？這φ和Φ是一公一母？不是同一隻蝦？亂了，亂了！

來源: π 於 2007-06-13 13:49:46 [舊帖] [給我悄悄話] 本文已被閱讀：次

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咦？這φ和Φ是一公一母？不是同一隻蝦？ 亂了，亂了！