The results showed that the effect of group velocity dispersion(GVD) on the pulse with large chip was slight and the effect of spectral width on the self-focusing properties could be ignored.
研究结果表明，群速度色散（GVD）对大啁啾脉冲的影响很小，谱宽对自聚集的影响可以忽略。
2
METHODS A group of ultraviolet spectral was used.
方法采用中药紫外谱线组法进行鉴别。
3
The infrared spectral analysis of the hydrolyzation product shows that the hydrolyzation product contains carboxyl, acetamide group, and a small amount of cyanogen group.