城市供水管网 Urban Water Supply Network ; City water supply pipe network
城市供水管网信息系统 WSDNIS
城市供水管网管理系统 CWNMS
城市蒸汽管网 urban steam pipe network system
城市燃气管网系统 gas pipe network system
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这不仅是从零开始建设这么复杂的城市管网系统的事儿。
Thus it is not just to build a complicated heating network from scratch.
因此进行城市管网规划设计的研究具有重大的实际意义。
So it is very important to study the optimum design of city natural gas pipeline network system.
论述了大管径供热管道直埋施工，在城市管网改造中的施工方法和质量控制。
This paper expounds the direct embed construction of heat input pipe with big diameter, and its constructing method and quality control in the rebuilding of urban pipe network as well.
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