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pind, millel optilisi suurusi mõõdetakse või sätestatakse, average illuminance on the specified surface when the installation is new
arvestuspind . Valgustehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//valgus/arvestuspind/1/est (19.06.2026)
