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  1. Oxford American Dictionary

    worm gear

    • IPA[ˈwərm ˌɡir]
    • n.
      a mechanical arrangement consisting of a toothed wheel worked by a short revolving cylinder (worm) bearing a screw thread.

    • noun: worm gear, plural noun: worm gears

    • 更多解釋

    worm gear

    • n.
      a mechanical arrangement consisting of a toothed wheel worked by a short revolving cylinder ...

    Oxford Dictionary