接地的

When installation, unlade the join copper bus bar, through the preformed long-square hole, fixing it on the main grounding bus bar.

安装时将连铜排卸下，穿越留的长方孔，固定在相邻两的主接铜排上。

Grounding and its notices were probed into construction of trolley isolative wire. How to eliminate safe hidden troubles in construction was discussed also.

探讨架空绝缘线施工时的接问题注意事项及如何消除施工中的安全隐患。