Holweck valve

例句：

1. 1. The Holweck valve was designed to control the flow of oil in the pipeline.
   霍尔维克阀门被设计用来控制管道中石油的流动。
2. 2. The engineers were working on modifying the Holweck valve to improve its efficiency.
   工程师们正在努力改进霍尔维克阀门，以提高其效率。
3. 3. The Holweck valve is a critical component of the oil refinery's system.
   霍尔维克阀门是炼油厂系统的关键组成部分。