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| spectral distribution of energy; spectral energy distribution; spectral distribution | |||
| spectral characteristic | |||
| spectral energy distribution (specifying the distribution of radiated energy as a function of wavelength); spectral power distribution | |||
| spectral energy distribution (of radiation) | |||
| spektrale Energieverteilung: 4 фрази в 2 тематиках |
| Оптика розділ фізики | 2 |
| Фізика | 2 |