recirculated seal

例句：

1. 1. The new design of the recirculating seal has greatly improved the efficiency of the system.
   新设计的循环密封大大提高了系统的效率。
2. 2. The recirculating seal is a critical component in maintaining the integrity of the pipeline.
   循环密封是保持管道完整性的关键部件。
3. 3. The engineers were able to fix the leaky recirculating seal with a simple patch.
   工程师们能够用简单的补丁修复泄漏的循环密封。