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本文对灵武煤田含煤岩系延安组煤岩显微组分的甾萜类化合物作了对比研究．结果表明，同一沉积环境中镜质组与丝质组的甾萜类化合物特征及不同沉积环境中同一显微组分（镜质组或丝质组）的甾萜类化合物特征有着规律性的变化．
In this paper, the comparison of the terpenoids of the micro-components of coal and rock in Yanan Formation, a coal-bearing series in Lingwu coalfield, is carried out. The results showed that the characteristics of the terpenoid compounds of the vitrinite and siliceous groups in the same depositional environment and the characteristics of the terpenoid compounds of the same micro-component (vitrinite or siliceous group) in different depositional environments varied regularly .