power circuit的用法和样例：
例句
- According to the rules, there should be people especially assigned in a power network to save electrical power.
按照规定，电力网应设有专责人员负责节电工作。 - Power plants on the electric grid use fuel to produce electricity, however there are large quantities of waste-heat produced which often go unused.
发电厂的电力网使用的燃料来产生电力，但有大量的余热产生往往去使用。
