加大了尾矿综合利用的程度，并为二次资源开发、生产高附加值产品开辟了一条途径。
It not only strength the complex utilization degree of tailing, but also open up a path for exploit of secondary resource and product high added value production.
认知无线电通过对授权频谱进行“二次利用”的方式，为缓解频谱资源缺乏与日益增长的无线接入需求之间的矛盾提供了可行的思路。
Using the licensed spectrum in "secondary utilization" way, cognitive radio provides a feasible solution for contradiction between spectrum resource scarcity and increasing radio access demands.
文章最后指出，目前，可建立GIS - EIS联合系统，以实现信息互换和信息资源的二次开发、利用。
In the end, the paper indicates that co-system of GIS and EIS can be established to accomplish interchange, second developing and using of information.
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