gas chromatograph

例句：

1. 1. Thegas chromatograph was used toanalyze the chemical composition of the sample.
   气相色谱仪被用来分析样品的化学成分。
2. 2. Gas chromatographs arewidely used in environmental monitoring and forensic science.
   气相色谱仪在环境监测和法医学中广泛应用。
3. 3. The gaschromatograph detected the presence ofa specific compound in the sample.
   气相色谱仪检测到了样本中的特定化合物。