fan pulley

例句：

1. 1.The fan pulley is responsible for therotation of the fan blades.
   风扇滑轮负责风扇叶片的旋转。
2. 2. The fanpulley needs to be adjusted regularly toensure smooth operation.
   风扇滑轮需要定期调整，以确保运行顺畅。
3. 3. Thefan pulley is acrucial component in the design ofair conditioning systems.
   风扇滑轮是空调系统设计中的关键部件。