1. The features of the biomarkers in the oil are of relatively low abundance of isoprenoidies, and no preference between pristane and phytane.
   生物标志物中类异戊二烯含量较低、植烷与姥鲛烷均势；
2. The features of the biomarkers in the oils are as follows: relati vely high abundance of isoprenoidies, no preference between pristane and phytane ;
   原油生物标志物中类异戊二烯含量较高，植烷与姥鲛烷均势；

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