quartz crystal monochromator

例句：

1. 1.The quartz crystal monochromator is used to analyze the chemical composition of materials.
   石英晶体单色仪用于分析材料的成分。
2. 2.The quartz crystal monochromator is a crucial tool for scientists in their research.
   石英晶体单色仪是科学家研究中不可或缺的工具。
3. 3. The quartz crystal monochromator is used to measure the wavelength of light.
   石英晶体单色仪用于测量光的波长。