This paper summarizes the advances and methods in study on structure analysis of polysaccharides.
综述近年来对多糖结构的研究方法和进展。
It summarized the mechanisms of ultra-violet degradation and stabilization of poly (vinyl chloride) (PVC) as well as the latest characterization methods in study of photodegradation of PVC.
阐述了聚氯乙烯的紫外光降解和稳定机理，以及聚氯乙烯光降解研究中最新的表征手段。
CONCLUSIONS This method is simple and economic, and is one of the accessory methods in study of HIV early infection and prevention of nosocomial infection.
结论该方法简便、经济，可作为HIV早期感染检测的一种辅助手段，防止医院内hiv的感染。
CONCLUSIONS This method is simple and economic, and is one of the accessory methods in study of HIV early infection and prevention of nosocomial infection.
结论该方法简便、经济，可作为HIV早期感染检测的一种辅助手段，防止医院内hiv的感染。
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