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研究了近红外反射一阶导数光谱法进行甲氧苄胺嘧啶粉末药品质量控制的可能性。用多变量统计分类技术（系统聚类分析、逐步聚类分析、主成分分析和逐步判别分析）．从甲氧苄胺嘧啶粉末药品的近红外反射一阶导教光谱，成功地鉴别了合格、劣和假药．结果令人满意。
The possibility of the quality control of trimethoprim powder by near infrared reflectance first derivative spectroscopy was studied. Using multivariate statistical classification techniques (cluster analysis, stepwise cluster analysis, principal component analysis and stepwise discriminant analysis). From the first-order guided light spectrum of trimebutine pyrimidine powder drugs, successful, inferior and counterfeit drugs were successfully identified. The result is satisfactory.