英语词汇“lumen-hour”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	lumen-hour
释义	lumen-hour [ loo-muhn-ouuhr, -ou-er ] / ˈlu mənˌaʊər, -ˌaʊ ər / noun Optics. a unit of luminous energy, equal to that emitted in 1 hour by a light source emitting a luminous flux of 1 lumen. Abbreviation: lm-hr Origin of lumen-hour First recorded in 1920–25 Words nearby lumen-hour lumbricoid, lumbricosis, lumbricus, lumbus, lumen, lumen-hour, lum-hat, Lumholtz's kangaroo, Lumière, Luminaire, Luminal Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020
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lumen-hour