(缩略词：lm)
- Physics the SI unit of luminous flux, equal to the amount of light emitted per second in a unit solid angle of one steradian from a uniform source of one candela【物理】流明（光通量单位）。
词源
late 19th cent.: from Latin, literally 'light'.
| 单词 | lumen |
| 释义 | (缩略词：lm)
词源 late 19th cent.: from Latin, literally 'light'. |
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