Group velocity inversion 群速度反演
This paper presents the analysis of the vertical viscoelastic dynamic responses of pipe group by Laplace numerical inversion method.
应用担普拉斯数值反演方法分析了群桩垂向粘弹性动力反应。
Using rate equation theory, the equation group including the population inversion density of the gain medium, photon density and the absorber ground state population density is acquired.
利用速率方程理论，得到包含激光增益介质反转密度、光子密度和饱和吸收介质基态布居数密度的速率方程组。
The arthor elaborates the measurement of the cyanogen group inversion rate of waste PAN yarn using acidic titrimetry under the condition of constant pressure alkali gydrolyzation.
论述了废旧腈纶毛线在常压碱法水解条件下，采用酸碱滴定分析方法测定氰基转化率，讨论了反应时间、温度、投料比等因素对水解反应的影响。
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