矿业系统工程与价值工程相辅并用，是大力提高矿产综合利用的社会经济效益的最佳对策。
To supplement the use of mining systematic engineering with value engineering is the best policy to improve social and economic benefits of the comprehensive utilization of mineral resources.
因此，水产养殖环境工程技术的研究与开发，已成为当今社会经济和环境领域的系统工程问题。
The research and development of the environment engineering have been the system engineering problem in social economy and environment control.
现代城市与乡村是一个复杂的社会经济地域系统，城市与乡村通过各种要素流的相互联系与相互作用构成了区域系统的两大子系统。
Modern urban-rural is a complicated social and economic regional system. Urban and rural consist of two sub-system of region by the interrelation and interaction of every element.
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