standard of luminous intensity

例句：

1. 1.The standard of luminous intensity is crucial for the design of lighting systems.
   光强度标准对于照明系统的设计至关重要。
2. 2.The research team has developed a new standard of luminous intensity to improve the efficiency of LEDs.
   研究团队已经制定了一个新的光强度标准，以提高LED的效率。
3. 3.The standard of luminous intensity is used to measure the brightness of light sources.
   光强度标准用于测量光源的亮度。