steradian
常見例句
- steradian(a unit of three-dimensional measure)
球面度, 立體孤度(一種三維量單位) - 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.
光通量單位等于一國(guó)際燭光照射在距離為一厘米面積為一平方厘米的平面上的光通量。 返回 steradian