power circuit的用法和樣例：
例句
- According to the rules, there should be people especially assigned in a power network to save electrical power.
按照規定，電力網應設有專責人員負責節電工作。 - Power plants on the electric grid use fuel to produce electricity, however there are large quantities of waste-heat produced which often go unused.
發電廠的電力網使用的燃料來產生電力，但有大量的餘熱產生往往去使用。
