The results show that it is a effective means to concentrate trace amount of volatile organic substance in GC analysis.
实验表明，该装置是痕量挥发性有机物浓缩富集-气相色谱分析的有效手段。
The results show that it is a effective means to concentrate trace amount of volatile organic substance in GC analysis.
实验表明，该装置是痕量挥发性有机物浓缩富集-气相色谱分析的有效手段。
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