回複：回複：How to solve this physics problem?

來源: 清華狂徒 於 2009-04-02 07:25:57 [] [舊帖] [給我悄悄話] 閱讀數 : (11 bytes)
回答: How to solve this physics problem? 由 ghztomy 於 2009-03-28 20:00:48

Wp + 2/5 Wb

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