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31. TiO 元素*
讲一篇关于TiO的一个元素有多么多么好, 可以消除水里面的污染,消除汽车尾气污染。(有细节题) natural用好长时间才能自净的 污染TiO一会就能解决。
最后一段是个转折, 一个叫兽站出来说有什么什么问题。。。。
1.2.4考古:
V1 (710)
Fourth Topic: The effect of TiO2 (a chemical)
Par1: TiQ2 is a chemical that can help disolve pollutants, and it went on to explain how
Par2:Mentioned through two examples, one in Japan and the other in Hong Kong, that people are finding new ways to use TiO2 to fight pollution. The HK example is about using TiO2 to absord waste gas from cars on the stree.
Par3: However, it is not very easy to apply TiO2 because it only works when reacts with a very small portion of the spectrum from the sun light. |
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