英语词汇luminous efficacy怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	luminous efficacy
释义	luminous efficacy n. 1.符号为K(quotient of luminous flux and radiant flux)光视效能 2.符号为η_v或Φ_v(quotient of luminous flux and power consumed)发光效能
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