求翻译：论文在总结前人研究成果的基础上，从矿山企业经济效益、资源复采、国家政策等方面全面分析了适合井工转露天开采的资源条件是什么意思？

In conclusion, the results of previous research papers on the basis of economic benefits from mining enterprises, resource re-adopt, a comprehensive analysis of national policy and other aspects of work well suited to open-pit mining of the resource conditions turn

Before summing up research papers on the basis of the outcome from mining enterprises, economic efficiency, resource recovery, such as mining, national policies suitable for Wells has provided a comprehensive analysis of the open pit resource conditions

The paper in summarizes in the predecessor research results foundation, from the mine enterprise economic efficiency, the resources duplicate picked, aspects and so on national policy analyzes comprehensively has suited the well labor to transfer open-air mining the resources condition

At the conclusion of the predecessors of papers on the basis of the results, from the second mining of mining enterprise economic benefits, resources, a comprehensive analysis of the State policy suitable for underground into opencast mining resources

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