The smart Trick of hướng dẫn That Nobody is Discussing
Harmonics are periodic distortions of voltage, existing, or ability sine waves. Harmonics in energy distribution units are frequently attributable to non-linear masses which include switched mode dc electric power supplies and adjustable speed motor drives.Cảnh báo cấp độ rủi ro thiên tai do xâm nhập mặn ở Đồng bằng sông C�