luminous flux intensity

例句：

1. 1.The luminous flux intensity of the light source is measured to determine its efficiency.
   光源的光通量强度被测量以确定其效率。
2. 2. The luminous flux intensity of the solar spectrum is used to calculate the energy output of the sun.
   太阳光谱的光通量强度被用来计算太阳的能量输出。
3. 3. In this experiment, we measured the luminous flux intensity of the LED light bulb.
   在这个实验中，我们测量了LED灯泡的光通量强度。