“lumen-hour”的概念、定义、翻译、参考文献-科学参考

单词	lumen-hour
释义	lumen-hour [`lü·mǝn ¦au̇r] ^OPTICS A unit of quantity of light (luminous energy), equal to the quantity of light radiated or received for a period of 1 hour by a flux of 1 lumen. Abbreviated lm-hr.
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