青云翻译

A transformer, frequency control principle

1 pressure and frequency principle

1 Live pressure, frequency conversion velocity modulation principle

Then combine the net, give directly from the charged barbed wire net the electrical engineering power supply, the electrical engineering is synchronously turning to soon descend the 恒 to soon revolve, the electrical engineering control system passes the 励磁 of control the electrical engineering to co

1 pressure and frequency principle