impeller assembly

例句：

1. 1. The engineer assembled the new impeller for the pump.
   工程师组装了新泵的叶轮。
2. 2.The impeller assembly was a critical component of the machine's operation.
   叶轮装配是机器运行的关键部件。
3. 3. The impeller assembly was responsible for the efficient flow of water through the pump.
   叶轮装配负责通过泵高效地流动水。