人眼能感知的光亮是以流明-小时为单位计量的，每流明相当于一支燃烧一小时的蜡烛产生的能量。
The light perceived by the human eye is measured in units called lumen-hours.This is about the amount produced by burning a candle for an hour.
人眼感受的光用流明时这个单位来衡量——燃烧一根蜡烛一个小时所产生的光的量就是一流明时。
The light perceived by the human eye is measured in units called lumen-hours. This is about the amount produced by burning a candle for an hour.
我们手头的其中一台XJ-A130， 开箱时最大流明输出1228流明，但使用过130小时之后其最大流明输出降为949流明，降幅达23%。
On one of our XJ-A130s, the max lumen output was 1228 when it was new. After 130 hours of use its maximum brightness dropped to 949 lumens, which is a 23% reduction.
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