spectral bandwidth

例句：

1. 1.The spectrum of the solar spectrum is a measure of the amount of energy emitted by the sun.
   太阳光谱的谱系是衡量太阳发射能量的量度。
2. 2. In this experiment, we measured the spectral bandwidth of the light source.
   在这个实验中，我们测量了光源的光谱带宽。
3. 3. The spectral bandwidth of the radio wave is crucial for determining its frequency.
   无线电波的光谱带宽对于确定其频率至关重要。