standard light source

例句：

1. 1. The new lighting system uses a standardlight source to ensure uniformity in theclassroom.
   新照明系统使用标准光源以确保教室内的一致性。
2. 2. The research team used astandard light source to measure the color temperatureof the room.
   研究团队使用标准光源来测量房间的颜色温度。
3. 3. Themanufacturer claims that their producthas a standard light source thatis energy-efficient and eco-friendly.
   制造商声称他们的产品具有一个标准的光源，既节能又环保。