unbalance vane pump

例句：

1. 1. The unbalanced vane pump is a common problem in the oil industry.
   不平衡转子泵是石油工业中常见的问题。
2. 2.The unbalanced vane pump was designed to improve efficiency in pumping heavy liquids.
   不平衡转子泵被设计用来提高在抽送重液体时的工作效率。
3. 3. The unbalanced vane pump has been shown to be more efficient than traditional pumps in certain applications.
   研究表明，在某些应用中，不平衡转子泵比传统泵更高效。