光源强度 meaning in English

intensity of light source
light source intensity

We take advantage of the method of trying and supposing to finish the experiment . for example , we firstly compute the number of the led regarding perfect situation , then finish the experiment and rectify the numerical value . for another example , we firstly compute the resistance under the desiring situation , secondly choose appropriate resistances according to the debug result
在试验过程中,采用了假设法,在光源强度的选择中,首先将led看作理想点光源,然后对其光路进行分析,计算出led需要的个数,最后在试验中对结果进行修正;在确定光源驱动电路电阻时,也是考虑各种器件都工作在理想状态下,然后计算出其值,最后在调试的过程中对其进行修改。