啊?!氮上有质子?!我万万没想到...我又错了
............嗟叹之.......
吾生行休矣 2008-09-15 13:28
友情de羁绊 2008-09-15 13:29
tonberry 2008-09-15 13:29
友情de羁绊 2008-09-15 13:29
叔丁基过氧化氢 2008-09-15 13:29
吾生行休矣 2008-09-15 13:30
友情de羁绊 2008-09-15 13:30
tonberry 2008-09-15 13:31
友情de羁绊 2008-09-15 13:31
兔RABBIT子 2008-09-15 13:31