The relations between spectral intensity and parameters including the mean value of maximum ground accelerations,earthquake intensity and earthquake level, are derived.

the corresponding parameters of the pow－ er spectral density function of the filtered Gaussian white noise process(Kanai-Tajing spec－ trum) are determined, and the relations between Kanai-Tajimi spectral intensity and the mean value of maximum ground accelerations, or the earthquake intensity and the maximum earthquake affecting coefficient are derived.

Based on the perturbation theory,the influences of the Fermi resonance interaction between the two and three vibronic levels on the level energy,wavefunction,and the spectral line intensity are investigated in detail respectively.

It is shown that excitation temperature increases with increasing microwave power,and decreases with increasing gas flux,the spectral line intensity initially increases with increasing microwave power,decreases at 550 W and 700 W,and then increases again.

In this paper,acoefficient correction method is presented to improve the code of spectral optical power evaluation,which offers a solution for improving the accuracy of material spectral half-quantitative analysis.

Two parameters,block spectrum intensity Seq and spectrum shape factor a,which describe the characteristics of the loading block spectrum are defined,and the relationship between the parameters and fatigue crack propagation behaviours is investigated.