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对四类桥链中含氮、硫原子的二酰胺的质谱进行了研究．揭示了它们的碎裂规律；指出了各类之间质谱的异同；推论了一些特征离子的结构和可能的形成机理．
The mass spectra of diamides containing nitrogen and sulfur atoms in four types of bridge chains were studied. Reveal their fragmentation rules; point out the similarities and differences between the various types of mass spectra; deduce the structure of some of the characteristic ions and possible formation mechanism.