feed-water heating loop

例句：

1. 1.The system uses a feed-water heating loop to heat the water for the boiler.
   该系统使用一个供水泵循环来为锅炉加热水。
2. 2. The engineer designed the feed-water heating loop to ensure efficient energy use.
   工程师设计了供水泵循环系统以确保能源的有效利用。
3. 3. The new design of the feed-water heating loop has improved the efficiency of the system.
   新设计的供水泵循环系统提高了系统的能效。