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  1. Oxford American Dictionary

    thermionic emission

    • IPA[ˌTHərmēˈänik əˈmiSHən]
    • n.
      the emission of electrons from a heated source.

    • noun: thermionic emission, plural noun: thermionic emissions

    • 更多解釋

    thermionic emission

    • n.
      the emission of electrons from a heated source.

    Oxford Dictionary