The effects of sample concentration, ultrasonic extraction time, and different extracting solvent on the extraction of volatile microconstituents were also investigated.
研究了样品萃取量、超声波萃取时间、以及不同萃取溶剂对微量挥发性成分萃取效果的影响。
Gas chromatograph is the important apparatus to analyze microconstituents in liquor and it is classified into packed column gas chromatograph and capillary column gas chromatograph.
气相色谱仪器是分析白酒中微量成分的重要设备，分为填充柱气相色谱仪和毛细柱气相色谱仪。
Gas chromatograph is the important apparatus to analyze microconstituents in liquor and it is classified into packed column gas chromatograph and capillary column gas chromatograph.
气相色谱仪器是分析白酒中微量成分的重要设备，分为填充柱气相色谱仪和毛细柱气相色谱仪。
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