讨论了合成反应的条件和质谱裂解途径。
We also analysed the conditions of synthetic reaction and fragmentation method of the compounds in MS.
结果表明：胆甾醇酯的EI质谱裂解途径主要由甾环决定，各化合物谱图之间几乎无差别；
The result shows that EI fragmentation process of cholesterol esters is determined mostly by the steroid nucleus, and there is almost no difference among the mass spectra of various compounds.
采用电喷雾离子阱(ESI - MS)质谱技术对水飞蓟宾的结构和裂解途径进行研究。
The structure and fragmentation pathway of silybin were elucidated by electron spray ionization mass spectrometry (ESI-MS).
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