ro·tor /ˈrotɚ/
  轉子,迴轉軸,轉動體
  Ro·tor n. Elec. The rotating part of a generator or motor.  Contrasted with stator, the stationary part.
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  rotor
       n 1: the rotating armature of a motor or generator [syn: rotor
            coil] [ant: stator]
       2: the revolving bar of a distributor
       3: rotating mechanism consisting of an assembly of rotating
          airfoils; horizontal rotors on a helicopter or compressor
          rotors of a jet engine