对埋地并采用阴极保护的金属管道来说，没有良好的电绝缘，就无法发挥其保护效果。

For buried metal pipeline which has cathodic protection, the protective effect would not be brought into play if the electrical insulation is not in good condition.

youdao

对埋地并采用阴极保护的金属管道来说，没有良好的电绝缘，就无法发挥其保护效果。

For buried metal pipeline which has cathodic protection, the protective effect would not be brought into play if the electrical insulation is not in good condition.

youdao