Of an interior lighting installation . the ratio of the direct flux on the working plane to the downward flux of the installation 在室内照明系统中,工作面上的直射光通与系统所有向下辐射的光通之比。
4.
The dependence of the electron in 4i _ ( 13 / 2 ) level on the measured temperature and the radiative transition property of different stark sub - level were discussed 讨论了~ 4i _ ( 13 2 )能级电子布局随测量温度的变化以及不同stark劈裂态电子向下辐射跃迁的特性。