为什么甲醛是一元醛�,它不是含有两个醛基吗,一元醛的定义是什么�,求大神解答 知乎 Template




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tomski为什么甲醛是一元醛�,它不是含有两个醛基吗,一元醛的定义是什么�,求大神解答 知乎 coloring