介绍了代表性校正集样本的选择、统计学方法校正模型建立等近红外光谱的工作原理，以及利用近红外光谱进行材料鉴别和定性、 定量分析方法。
The main principle of near-infrared spectroscopy applied in the selection of representative polypropylene pellet samples and the establishment of statistical standardization model were introduced.
介绍了代表性校正集样本的选择、统计学方法校正模型建立等近红外光谱的工作原理，以及利用近红外光谱进行材料鉴别和定性、 定量分析方法。
The main principle of near-infrared spectroscopy applied in the selection of representative polypropylene pellet samples and the establishment of statistical standardization model were introduced.
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