heat-exchanger circuit

例句：

1. 1.The heat-exchanger circuit is responsible for removing waste heat from the engine.
   热交换器回路负责从发动机中去除废热。
2. 2.The design of the heat-exchanger circuit plays a crucial role in energy efficiency.
   热交换器回路的设计在能源效率方面起着至关重要的作用。
3. 3. The engineers carefully designed the heat-exchanger circuit to optimize the engine performance.
   工程师们仔细设计了热交换器回路，以优化发动机性能。