单位面积的光通量,叫照度,单位名称:勒克斯,写为:Lx.光通量单位名称:流明,写为:Lm.
它们关系,如同压强、压力.
猜你喜欢
- 1kg/m3换算成g/mm3 怎么换 知道的帮下
- 2精卫填海 原文解释词语...
- 3i love you ever but you don't care me?这句话翻译成中文怎么说?
- 4sin(B+C)=?cos(B+C)=?
- 5多项式XY²-9xy+5x³Y²-25的最高次项是
- 6思念爱人的文言文
- 7They are lying on the beach .They are very r (relax)如题
- 81+2+3+...+1999+2000+2001+2002
- 9The father is going to give the bookcase to his daughter.
- 10三个连续奇数的和是75,这三个数分别是_.