alternating-current system的用法和樣例：
例句
- In favor of this system are its simplicity and its saving with respect to other AC systems.
與其它交流系統相比，這系統的優點是它的簡單和節約。 - With the transformer, the ability to transmit power at high voltage with corresponding lower current and lower line-voltage drops made ac more attractive than dc.
變壓器使得電能可以在更高電壓和更低電流傳輸，降低了線路電壓降，使交流系統比直流系統跟具吸引力。
