为了研究生物降解对石油组成的效果和控制，本文分析了辽河盆地的一系列石油和岩石抽提物样品。

A suite of oils and reservoir extracts from the Liaohe basin, NE China, was analyzed to investigate the effects and controls of biodegradation on petroleum composition.

youdao

油藏是珍贵的地下石油堆积物，而油田是由一个或多个油藏所组成的地下区域。

Oil pools are valuable underground accumulations of oil, and oil fields are regions underlain by one or more oil pools.

youdao

石油由原油和天然气组成，它们似乎来源于海洋沉积物中的有机物质。

Petroleum, consisting of crude oil and natural gas, seems to originate from organic matter in marine sediment.

youdao