lm
معنی کامل و مثالها
● مخفف: lumen
ریشه و کاربرد
ریشه
Abbreviation of 'linear meter'.
مثال
- The fabric is sold by the lm.
- The room measures 5 lm in length.
- The construction project requires 1000 lm of cable.
تعریف انگلیسی
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