The underground pipeline cross interference of city road is an important factor which constrains the whole urban pipeline engineering construction.
城市道路地下管线交叉冲突，是制约整个城市管线工程建设的重要因素。
2
The design, construction and operating condition of grounding equipment affect not only safety operation of power system but also electromagnetic interference of substation.
接地装置的设计施工及运行情况的好坏不仅影响电力系统安全运行，也是影响变电站电磁干扰的重要方面。
3
In the construction task, more difficult, interference, time tight case, make sure the project safety quality construction progress.