double-focusing spectrometer

例句：

1. 1.This double-focusing spectrometer can analyze the chemical composition of samples with high accuracy.
   这款双聚焦光谱仪可以高精度地分析样品的化学成分。
2. 2.The double-focusing spectrometer is used to detect the presence of pollutants in water samples.
   双聚焦光谱仪用于检测水样中污染物的存在。
3. 3. In the field of environmental science, double-focusing spectrometers are widely used for analyzing the concentrations of trace elements in soil and water.
   在环境科学领域，双聚焦光谱仪被广泛用于土壤和水中痕量元素的浓度分析。