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