qualitative analysis is major
qualitative analysis is major
定性分析
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Progress in the analysis of major additives for polymers in recent years is summarized. The qualitative and quantitative analysis methods for additives and their acting mechanisms are introduced.
综述了近年来聚合物添加剂主要成分的分析进展，介绍了添加剂的定性定量分析方法及作用机理。
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