To Protect very short high voltage transmission lines is a difficult and urgent Problem.

高压短距离输电线的继电保护方式是一个困难而急待解决的问题。

youdao

To Protect very short high voltage transmission lines is a difficult and urgent Problem.

高压短距离输电线的继电保护方式是一个困难而急待解决的问题。

youdao