This paper analyzes the glyceryl polyether by nuclear magnetic resonance ( NMR ) spectroscopy .

用 核磁共振 分析了甘油聚醚.

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The structures of these compounds have been determined by elemental analysis, IR spectra, 1 HNMR, 13 CNMR and two - dimensional NMR spectroscopy.

用元素分析 、 红外光谱1、HNMR1 、 3CNMR及多种二维核磁共振谱确定了目标化合物的结构.

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The melamine - modified urea - formaldehyde resin ( MUF ) for E 1 type MDF was quantitatively examined using the 13 C - NMR spectroscopy.

采用13C-核磁共振定量分析了由选定碱-酸-碱工艺所合成的E1级MDF用三聚氰胺改性脲醛树脂.

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