The current status of exploitation of chaerhan salt lake magnesium resource is reviewed.
对察尔汗盐湖镁资源开发现状进行了评述，概述了国内镁盐市场及目前的技术进展。
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。
This paper introduced the status of water environment, exploitation of technology and equipment and current Policy for reuse of reclaimed water in China.
介绍了目前我国水环境状况，净化污水再用、技术和装备国产化开发，当前的政策。
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