20點唷,請問一種化學方法可以顯現出字,20點唷 - 酒精
By Ida
at 2013-01-04T00:00
at 2013-01-04T00:00
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我記得國中物理課還是化學課有教到就是不知道用澱粉還是什麼酒精之類的總之寫好的時候是看不到的然後塗上一種東西之後,產生化學反應,字就會出現了http://tw.knowledge.yahoo.com/question/question?qi...有點類似上面這個知識+提到的要寫卡片給女孩子用的,有人知道嗎...Showmore
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By Isla
at 2013-01-06T21:38
at 2013-01-06T21:38
By Ula
at 2013-01-04T10:34
at 2013-01-04T10:34
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