reverse circulating sub

例句：

1. 1.The engineer designed a new reverse circulation subsystem to improve efficiency.
   工程师设计了一种新的逆循环子系统以提高效率。
2. 2.The medical team used the reverse circulation subsystem to deliver drugs directly into the patient's bloodstream.
   医疗团队使用逆循环子系统直接将药物输送到患者的血液中。
3. 3.The researcher found that the reverse circulation subsystem could be used to optimize energy distribution in power grids.
   研究者发现，逆循环子系统可以用于优化电网中的能量分配。