It can be to improve the quality of supply that the reasonable selection of underground low voltage cable cross section.

合理选择井下低压电缆截面，可为提高供电质量提供客观依据。

youdao

It can be to improve the quality of supply that the reasonable selection of underground low voltage cable cross section.

合理选择井下低压电缆截面，可为提高供电质量提供客观依据。

youdao