“对苯二甲酸二酰肼”和“咖啡因”的化学分子式都是c₈h₁₀n₄o₂。但为什么搜不到它们的关联信息�? 知乎 Template




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tomski“对苯二甲酸二酰肼”和“咖啡因”的化学分子式都是c₈h₁₀n₄o₂。但为什么搜不到它们的关联信息�? 知乎 coloring