As the transmission length reaches a certain distance, DC transmission becomes economically attractive over ac.

当输电距离足够长时，直流输电的经济性将优于交流输电。

youdao

As the transmission length reaches a certain distance, DC transmission becomes economically attractive over ac.

当输电距离足够长时，直流输电的经济性将优于交流输电。

youdao