lumina

漢語翻譯

腔, 流明(光通量單位)
【醫】 腔, 流明(光通量單位)

英文解釋：

名詞 lumen:

1. a unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions
   同義詞：lumen, lm
2. a cavity or passage in a tubular organ
   同義詞：lumen