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An aldehyde is an organic compound containing a formyl group.
醛是一种含有甲酰组的有机化合物。
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In the two sides of nitrogen bridge, the degree of conjugation of one double bond with one formyl polyenic group is about equal to two aromatic cycles.
在氮桥的二边，一个双键及一个烯醛基共轭程度大致与二个芳稠环相当。
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