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koguaeg, mille jooksul elektrilampi on kasutatud, enne kui see muutub kasutuks või loetakse selliseks vastavalt kindlaksmääratud kriteeriumidele, total time for which an electric lamp has been operated before it becomes useless, or is considered to be so according to specified criteria
life of an electric lamp . Valgustehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//valgus/life%20of%20an%20electric%20lamp/1/eng (17.08.2026)