DIN 5031-4:1982-03 Physics of radiation in the field of optics and illuminating engineering; efficiencies

标准编号：DIN 5031-4:1982-03

英文标题：Physics of radiation in the field of optics and illuminating engineering; efficiencies

德文标题：Strahlungsphysik im optischen Bereich und Lichttechnik; Wirkungsgrade

发布日期：1982-03

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