The concept of "Fragment Modem" and "Grain Index" recently put forward made the study of sandstone fragment components into practical field of macro- geology.

近年来，“碎屑模型”和“颗粒指数”概念的提出使得砂岩碎屑组分的研究进入了宏观地质学的实用领域。

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Currently, in the oil field development study, the development index prediction of oilfield block is a new hot research topic.

目前，在油田开发研究中，油田区块开发指标的预测是一个新的热点研究课题。

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The study has captured the effectiveness index of different certification bodies, based on the data gathered from the field validation study.

研究夺取了不同的证明身体有效率索引， 根据数据被会集从领域检验研究。

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