lumen (lm)造句

"lumen (lm)"是什么意思

造句与例句手机版

The amount of light emitted by one candle that falls on one square foot of surface one foot away is called a lumen ( lm )
光的量是由一支蜡?由一英?的距离照在一平方英?的地方做为计量单位：流明。
It's difficult to see lumen (lm) in a sentence. 用lumen (lm)造句挺难的

相邻词汇

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