论坛 › LED有问必答(提问) › This is for 800 m long cycle path – 2 m wide Em = 5 - 10lm,Em是啥意思?

ledpan 发表于 2015-9-7 18:35:59

This is for 800 m long cycle path – 2 m wide Em = 5 - 10lm,Em是啥意思?

Q: This is for 800 m long cycle path – 2 m wideEm = 5 - 10lm后面Em是什么呢？

A: 估计。estimate。我估计是这个意思。但是又有点像 是emission或者emit

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