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relative luminosity factor
光学	relative spektrale Hellempfindlichkeit (the ratio of the luminosity factor for a particular wavelength to the value at the wavelength of maximum luminosity); spektraler Hellempfindlichkeitsgrad (the ratio of the luminosity factor for a particular wavelength to the value at the wavelength of maximum luminosity); spektraler Hellempfindungsgrad (the ratio of the luminosity factor for a particular wavelength to the value at the wavelength of maximum luminosity)
天文学	spektraler Hellempfindlichkeitsgrad
技术	spektrale Hellempfindlichkeit
物理	relative spektrale Hellempfindlichkeit; spektraler Hellempfindungsgrad