例句與造句

1. Doubly fed electric machines use the slip rings to supply external power to the rotor circuit, allowing wide-range speed control.
2. The gears increase the rotational rate and send the kinetic energy obtained from the wind to a doubly fed electric machine, where it is converted into electrical energy.
3. Advanced energy efficient electric motor ( and electric generator ) technology that are cost effective to encourage their application, such as the brushless wound-rotor doubly fed electric machine and energy saving module, can reduce the amount of carbon dioxide ( CO 2 ) and sulfur dioxide ( SO 2 ) that would otherwise be introduced to the atmosphere, if electricity is generated using fossil fuels.
4. It's difficult to find doubly fed electric machines in a sentence. 用doubly fed electric machines造句挺難的