direct-reading spectrograph

例句：

1. 1. The direct-reading spectrograph was used to analyze the chemical composition of the sample.
   直接读光谱仪被用来分析样品的化学成分。
2. 2.The researcher developed a new technique for analyzing complex samples using the direct-reading spectrograph.
   研究者开发了一种新技术，使用直接读光谱仪分析复杂样本。
3. 3.The direct-reading spectrograph is a powerful tool for scientists who need to quickly and accurately analyze samples.
   直接读光谱仪是科学家快速而准确地分析样本的强大工具。