This paper deals with the situation of non-ferrous metal mineral resources in Hunan province and its status quo of exploitation and economic evaluation.
本文论述湖南省有色金属矿产资源的形势，开发利用现状及矿产经济评价。
Wetlands are a unique ecosystem on the earth created by the interaction of water and land. Evaluation of wetlands can be helpful to the exploitation of wetland resources.
湿地是地球上水陆相互作用形成的独特生态系统熏湿地评价能帮助人们更好的开发和利用湿地资源。
Research works on evaluation of coal resources in middle exploitation stage have been conducted and the basic rules and thoughts have been brought forward. Based on these, No.
对处于开发中期阶段的煤炭资源评价进行研究，提出了建立开发中期煤炭资源综合评价体系的基本原则和思路。
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