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

> as lemmas

lumen-hour

lumen-hour n. the quantity of light corresponding to a flux of one lumen radiated for one hour.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > light > intensity of light, luminosity > [noun] > unit of light intensity > specific measurements

candle-metre1908

lumen-hour1925

lumen-second1930

1925 Trans. Illuminating Engin. Soc. (U.S.) 20 630 The Lumen-hour is the unit of quantity of light. It is equal to a flux of one lumen continued for one hour.

1975 Times 21 Mar. 20/3 The public wanted a certain package of candlepower (expressed in lumens); the industry assured certain fixed wattages, and then aimed at the minimum cost per lumen-hour for those wattages.

extracted from lumenn.

as lemmas

单词	lumen-hour
释义	> as lemmas lumen-hour lumen-hour n. the quantity of light corresponding to a flux of one lumen radiated for one hour. ΘΚΠ the world > matter > physics > electromagnetic radiation > light > intensity of light, luminosity > [noun] > unit of light intensity > specific measurements candle-metre1908 lumen-hour1925 lumen-second1930 1925 Trans. Illuminating Engin. Soc. (U.S.) 20 630 The Lumen-hour is the unit of quantity of light. It is equal to a flux of one lumen continued for one hour. 1975 Times 21 Mar. 20/3 The public wanted a certain package of candlepower (expressed in lumens); the industry assured certain fixed wattages, and then aimed at the minimum cost per lumen-hour for those wattages. extracted from lumenn. < as lemmas
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