| 释义 |
Noun: lumen (lumens,lumina) loomun- 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
- lm - A cavity or passage in a tubular organ
"the lumen of the intestine"
Derived forms: lumens, lumina Type of: bodily cavity, cavity, cavum, luminous flux unit Encyclopedia: Lumen |