从西北地区侏罗纪煤中分离出来的不同显微组分热解油生物标志物总体上比较相似，但在一些特殊生物标志物的分布上存在明显差异。

Biomarkers in the pyrolysis oils produced by various macerals from Jurassic coals, the Northwest China are generally similar, with distinct differences in some special compounds.

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和西方语言不同，中文中的词与词之间没有明显的切分标志。

And different from Western languages, Chinese, between words in no obvious signs segmentation.

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原油根据生物标志化合物特征划分为A类和B类，不同类型原油的分布具有明显的分带性。

The samples can be classified into type A and type B according to their biomarker characteristics. The distribution of different types of samples presents a clear zonation.

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