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.

安装时将互连铜排卸下，穿越间预留长方孔，固定在相邻两接铜排上。

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接问题注意事项及如何消除施工中安全。