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  1. Oxford Dictionary

    electron gun

    英式

    • n.
      a device for producing a narrow stream of electrons from a heated cathode.

    • noun: electron gun, plural noun: electron guns

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    electron gun

    • IPA[əˈlɛkˌtrɑn]

    美式

    • n.
      a device for producing a narrow stream of electrons from a heated cathode.

    Oxford American Dictionary