Chemical structures of products were confirmed by element analysis, ir, MS, et al.
所得产物经元素分析，红外光谱，质谱等分析确证结构。
The structure of the copolymer was identified by DTA, IR, MS, X-ray diffraction and polarizing microscope and the copolymer prepared is a block one mainly.
用DTA、IR、MS、X射线衍射和偏光显微镜初步研究了共聚物的结构，证明所得产物主要是嵌段共聚物。
The structure of sucralose was also identified by the methods of IR, MS, NMR and elemental analysis.
并用红外光谱、质谱、核磁共振、元素分析等方法对三氯蔗糖的结构进行了鉴定。
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