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instrument Päikese otsese kiirguse mõõtmiseks, instrument for measuring the direct solar radiation, instrumento para medir la radiación solar directa, instrument de mesure du rayonnement solaire direct, прибор для измерения интенсивности солнечной радиации
Aktinometer . Limnoloogia sõnastik. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//lim/Aktinometer/1/deu (19.06.2026)