In the high resistivity area, it is very difficult to reduce the earthing resistance to the given value.

在高电阻率地域，将接地电阻降到设计值非常困难。

youdao

In the high resistivity area, it is very difficult to reduce the earthing resistance to the given value.

在高电阻率地域，将接地电阻降到设计值非常困难。

youdao