本文提出县级城网规划设计存在问题和改进方法。

In this paper, urban network planning and design problems at the county level and improvements are put forward.

youdao

因此城网改造中有许多问题值得探讨，这正是论文的选题背景。

Many problem in rebuild of urban power grid is important, it is background of the thesis.

youdao

城网建设与改造的特点之一是变电所的小型化和采用电缆出线。

Substation miniaturization and cable output feeder is one feature of city power grid construction and alteration.

youdao