关键词 ] 光催化氧化 ;甲醛 ;二氧化钛 ;废水处理 [gap=6540]Key words :p hot ocatalytic oxidation ; f or malde h yde ; tita nium dioxide ; wastewater t reat me nt
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N-UNCOUNT Formaldehyde is a strong-smelling gas, used especially to preserve parts of animals or plants for biological study. 甲醛
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