n.

内腔；流明(光流的强度单位) 形容词：lumena名词复数：lumens

lumens

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"

lumens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。

lumens近义词

LM

lumens