double beam microspectrophotometer

例句：

1. 1. This instrument is used to measure the absorption of light by samples.
   这种仪器用于测量样品对光的吸收。
2. 2.The double beam microspectrophotometer was used to analyze the chemical composition of the sample.
   双光束微分光度计被用来分析样品的化学成分。
3. 3.The double beam microspectrophotometer was used to detect the presence of specific compounds in the sample.
   双光束微分光度计被用来检测样品中特定化合物的存在。