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  1. ...reference: http://en.wikipedia.org/ wiki /Electron_microscopy http... light microscopy The simplest polarizing...that is, horizontally across the front of the microscope. reference: http://www...

    分類:科學 > 其他:科學 2008年12月17日

  2. ... 1, the National Day of the People's Republic of China. 2008-12-13 10:22:48 補充: Reference: http://en.wikipedia.org/ wiki /Double_Ten_Day 2008-12...