rotor
 US /ˈroʊ.t̬ɚ/
 UK /ˈroʊ.t̬ɚ/

1. 
轉子
a hub with a number of radiating airfoils that is rotated in an approximately horizontal plane to provide the lift for a helicopter or other rotary-wing aircraft.
2. 
轉子
the rotating assembly in a turbine, especially a wind turbine.