differential spectra

• 差光谱； 差示光谱

differential spectra的用法和样例：

例句

1. Filter selection is made using inherent spectra.
   滤色镜的选择必须利用固有光谱。
2. They could look at the spectra of the light the moons reflected.
   他们可以观察月亮反射的光的光谱。