Gas Chromatograph/Mass Spectrograph气相色谱/质仪 Gas Chromatograph/Mass Spectrometer气相色谱/质谱 Gas Chromatography Coupled to Mass Spectrometry气相色谱质谱分析耦合 Gas Chromatograph/Mass Spectrometry气相色谱/质谱联用技术 gas chromatography/mass spectrometry气相色谱/质谱联用技术 gas chromatography combined with mass spectrometry气相色谱质谱联合分析法