spectrum lamp

例句：

1. 1. The new spectrum lamp is much more energy-efficient than the old one.
   这款新型光谱灯比旧款更节能。
2. 2.The teacher used a spectrum lamp to illuminate the dark classroom.
   老师用一盏光谱灯照亮了黑暗的教室。
3. 3.The spectrum lamp was used in the scientific experiment to study the properties of different wavelengths.
   在科学实验中，光谱灯被用来研究不同波长的特性。