采用子结构检索、公共子结构寻找和相似指数计算的方法研究了红外特征峰与对应子结构的相互关系。
This paper introduces a method which determinate the characteristic peak of IR through substructure searching, common substructure spreading, similarity index calculating.
采用热重分析（ TGA）、红外光谱分析（ FTIR）、 氧指数测定和垂直燃烧实验，研究了所合成的膨胀型阻燃剂对聚丙烯的阻燃作用。
Thermal gravimetric analysis(TGA), FTIR, Limited oxygen index(LOI) and vertical firing test are used to research the flame retardancy of the intumescent flame retardant on PP.
利用近红外光谱法测定了烷烃分子的分子连接指数，并探讨了混合烃分子连接指数与单烃分子连接指数之间的关系。
The molecule connecting index of hydrocarbon is measured by using NIR, and the relationship between the index of mon and multi hydrocarbon have been studied.
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