plane monochromator

例句：

1. 1. Theplane monochromator is used to analyzethe spectral characteristics of light.
   平面单色仪用于分析光的光谱特性。
2. 2. The monochromator was designed to improve the accuracyof the spectrometer.
   单色仪的设计旨在提高光谱仪的准确性。
3. 3. The monochromator was used to measure the wavelengthsof different colors.
   单色仪被用来测量不同颜色的波长。