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1. Oxford Dictionary

   impeller

   • IPA[ɪmˈpɛlə]

   英式

   • n.
     the rotating part of a centrifugal pump, compressor, or other machine designed to move a fluid by rotation.；a device turned by the flow of water past a ship's hull, used to measure speed or distance travelled.

   • noun: impeller, plural noun: impellers

2. • 更多解釋

   impeller

   • IPA[imˈpelər]

   美式

   • n.
     the rotating part of a centrifugal pump, compressor, or other machine designed to move a fluid ...

   Oxford American Dictionary