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  1. phototube

    • IPA[ˈfəʊtəʊtjuːb]

    英式

    • n.
      a photocell in the form of an electron tube with a photoemissive cathode.
    • noun: phototube, plural noun: phototubes

    • 更多解釋
    • IPA[ˈfōdōˌt(y)o͞ob]

    美式

    • n.
      a photocell in the form of an electron tube with a photoemissive cathode.

    Oxford American Dictionary