配电干线 meaning in English

distributing mains
distribution main

Distribution automation using distribution line carrier systems - part 1 : general considerations - section 4 : identification of data transmission parameters concerning medium and low - voltage distribution mains
配电线路载波通信系统用配电自动机械.第1部分:概论.第4节:中级和低压配电干线
Distribution automation using distribution line carrier systems - general considerations - guide to identification of data transmission parameters concerning medium and low - voltage distribution mains
使用配电线路载波系统的自动配电.一般考虑.关于中压和低压配电干线数据传输参数的识别指南