Abstract: The fraction compositions, group compositions and structure compositions of seve n catalytic stocks were determined by means of vacuum distillation, mass spectrum , element analysis and molecular mass measurement.

• 文摘:采用减压蒸馏、质谱分析、元素分析和分子质量测定对辽河原油的7种催化原料油进行了馏分组成、族组成和结构族组成的分析。