lumen
n. 内腔；流明(光流的强度单位)
形容词：lumena 名词复数：lumens
近义词：LM，
英英释义
Noun
- 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
- a cavity or passage in a tubular organ;
"the lumen of the intestine"
例句
用作名词(n.)
- The innermost region of cotton is called lumen.棉纤维的最内层组织叫内腔。
- A former luminance unit equals to one lumen per square foot.旧制光的亮度单位等于每平方英尺流明。