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  1. actinometer

    • IPA[ˌaktɪˈnɒmɪtə]

    英式

    • n.
      an instrument for measuring the intensity of radiation, especially ultraviolet radiation.
    • noun: actinometer, plural noun: actinometers

    • 更多解釋
    • IPA[ˌaktəˈnämədər]

    美式

    • n.
      an instrument for measuring the intensity of radiation, especially ultraviolet radiation.

    Oxford American Dictionary