Connection modes are the basic reflection of distribution network structure which is the focus of the urban distribution network planning and rebuilding.
在城市中压配电网的规划与改造中，网架结构十分重要，接线模式则是网架结构的基本反映。
2
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.
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。
3
Article 11 plans for the construction and rebuilding of power networks in urban areas shall be included in the overall plans for urban areas.