electronic power frequency control system

例句：

1. 1. The electronicpower frequency control system is used to regulatethe flow of electricity in homes and businesses.
   电子电力频率控制系统用于调节家庭和企业中的电力流动。
2. 2. The new electronic power frequency controlsystem has improved efficiency by up to30%.
   新型电子电力频率控制系统提高了效率高达30%。
3. 3. The electronic power frequencycontrol system was developed to address the issueof uneven power distribution in rural areas.
   电子电力频率控制系统的开发是为了解决农村地区电力分布不均的问题。