flat spectrum

例句：

1. 1. The new device has a flat spectrum that is ideal for night vision.
   这款新设备拥有平坦的光谱，非常适合夜间使用。
2. 2. The researcher discovered a flat spectrum that could be used to detect certain types of radiation.
   研究者发现了一种平坦的光谱，可以用来检测某些类型的辐射。
3. 3. The flat spectrum of the light source was crucial in the experiment.
   光源的平坦光谱在实验中至关重要。