发现部分元素的空心阴极灯发射线与其他元素的共振线或非共振线存在谱线重叠现象。

The spectral overlap was discovered among emission lines of some elements and resonance lines or non-resonance lines of other elements.

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利用元素分析、红外光谱、核磁共振氢谱和激光解析电离飞行时间质谱确证了其组成和结构。

Their chemical structures were confirmed by means of elemental analysis, infared spectra, proton nuclear magnetic resonance spectra and mass spectra.

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用红外光谱、核磁共振、元素分析测定了共聚物的结构及组成。

The structure and composition of the copolymer were characterized by IR, NMR and elementary analysis.

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