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单词
lumen-hour
释义
lumen-hour
lumen-hour
[
′lü·mən ¦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.
随便看
take aim at something
take a/its toll
take a jab at
take a jab at someone
take a jab at (someone or something)
take a joke
take a knee
take a knock
take a leaf from
take a leaf from a book
take a leaf from book
take a leaf from her
take a leaf from her book
take a leaf from him
take a leaf from his book
take a leaf from me
take a leaf from my book
take a leaf from (one)
take a leaf from one
take a leaf from one's book
take a leaf from our book
take a leaf from our books
take a leaf from somebody
take a leaf from somebody's book
take a leaf from someone
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更新时间:2026/8/2 19:47:02