illuminance of ground

例句：

1. 1. The sun's illuminance is measured in lux.
   太阳的照明强度用勒克斯来衡量。
2. 2. The streetlights provide ample illuminance for pedestrians.
   街灯为行人提供了充足的照明。
3. 3. The new technology improves the illuminance of the room.
   新技术提高了房间的照明强度。