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1. Oxford Dictionary

   Van de Graaff generator

   • IPA[ˌvan də ˈɡrɑːf]

   英式

   • n.
     a machine devised to produce a high voltage by means of an endless belt collecting electrostatic charge from a source and transferring it to a large isolated metal dome, on which a large charge accumulates.

   • noun: van de Graaff generator, plural noun: van de Graaff generators