Correction coefficient is important to electric charge refund, but its power factor Angle is unknown.

更正系数是补退电费的重要依据，但更正系数中的功率因数角也是未知数。

youdao

Correction coefficient is important to electric charge refund, but its power factor Angle is unknown.

更正系数是补退电费的重要依据，但更正系数中的功率因数角也是未知数。

youdao