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1·The research on modern economic geology indicates that most ore deposits are characterized by multi-source, multi-stage and multi-genesis.

现代矿床学研究表明，绝大多数矿床的形成具有多来源、多阶段、多成因的特点。

2·The research on modern economic geology indicates that most ore deposits formed with characters of multi-origin, multi-stage and multi-genesis.

现代矿床学的研究表明，绝大多数矿床的形成具有多来源、多阶段、多成因的特点。

3·Research on the relationship between deep rooted structural discontinuities and giant ore deposits is the latest development in economic geology.

深部构造与成矿作用关系的深入研究是矿床地质学目前研究工作的前沿课题和今后的发展趋势。

4·The branch of economic geology that relates to the origin, migration and accumulation of oil and gas, and to the discovery of commercial deposits.

石油地质学是经济地质学的一个分支，它涉及油气的起源、运移和聚集，以及商业沉积的发现。

5·This paper apply economic geology and geographic information system basic principle, taking small blue well field 7 coal bed geological condition as object of study.

本论文应用地质学和地理信息系统基本原理，以小青井田7煤层地质条件为研究对象。

6·Trap comprehensive evaluation is involved in evaluating trap quality based on trap, petroleum geology and economic considerations.

圈闭综合评价是依据圈闭条件、石油地质条件、经济条件，综合反映圈闭品质的过程。

7·Coal mine geology work is an important technology basis work in coal mine production and construction, and it will bring economic and social benefit.

介绍了矿井地质工作在煤矿生产建设中的重要作用及搞好和重视矿井地质工作所带来的经济效益和社会效益。

8·In the condition of soil layers engineering geology, how to find a set of optimal design parameters, in order to obtain both economic and safe purpose, is an important problem in soil-nail design.

在土层工程地质情况一定的条件下，如何寻找一组最佳设计参数，以达到既经济又安全的目的，是土钉支护设计的一个重要问题。

9·From view of geology, the paper has analyzed optimizing fracturing layers and improving economic profiles in detail.

并从地质角度出发，详细分析了优选压裂井层的依据。

10·As to the choice of an optimum oil field development plan, the application of value engineering in the quantitative synthesis of geology, oil field development and economic factors is expounded.

在油田开发方案选择时，如何应用价值工程法，定量地综合各种地质、开发和经济因素，选择最佳方案。