详细解释:n. 流明, 腔
【医】 腔, 流明(光通单位)
词型变化：
名词复数:lumens形容词:lumenal英语解释：
名词 lumen:
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同义词：lm