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.
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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