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新聞中心
1.光通量——光源在單位時間內所發出的光之能量,稱為光通量,亦稱為光束(φ)。 2.輝度——光源體在某一方向上,每單位透影面積上所發出的光度。 3.照度——單位面積內所入射光的量,也就是光束除以面積(m2)所得到的值用來表示某一場所的明亮...
時間:2024-05-21

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