那个,为什么有说每个水分子中有四个氢键也有说有两个氢键的,或者问什么时候说是四个什么时候说是两个? 知乎 Template




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tomski那个,为什么有说每个水分子中有四个氢键也有说有两个氢键的,或者问什么时候说是四个什么时候说是两个? 知乎 coloring