英语词汇“lamp lumen-depreciation factor”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	lamp lumen-depreciation factor
释义	lamp lumen-depreciation factor lamp lumen-depreciation factor The fractional loss of lumens radiated by a lamp at rated operating conditions; because of aging, this loss increases progressively during the lifetime of the bulb.
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