parallel feeder

例句：

1. 1. The engineers designed a parallel feeder to improve the efficiency of oil extraction.
   工程师设计了一个平行输油管来提高石油开采的效率。
2. 2.The pipeline was constructed using a parallel feeder to reduce the risk of leaks.
   该管道采用了平行输油管来降低泄漏的风险。
3. 3. The parallel feeder allowed for more efficient transportation of oil products.
   平行输油管使得石油产品的运输更加高效。