spectrograph tube

例句：

1. 1.The spectrograph tube is used to analyze the chemical composition of materials.
   分光镜管用于分析材料的成分。
2. 2.The scientist used the spectrograph tube to study the properties of different types of metals.
   科学家使用分光镜管研究不同类型金属的性质。
3. 3. The spectrograph tube was a crucial tool in the development of modern optics.
   分光镜管是现代光学发展的关键工具。