英语词汇“luminous efficacy”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	luminous efficacy
释义	Word Frequency luminous efficacy noun 1. the quotient of the luminous flux of a radiation and its corresponding radiant flux Symbol: K 2. the quotient of the luminous flux emitted by a source of radiation and the power it consumes. It is measured in lumens per watt Symbol: ηv, Φv
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