probing wave

Firstly, probing the medium with a time-harmonic homogeneous plane wave gives the Christoffel equation. Then the formulas for slowness and complex velocities of the longitudinal wave and the slow and quick shear waves may be obtained from Christoffel equation.

使用平面均匀简谐波的方法，得到了Christoffel方程，利用此方程推导出纵波及快、慢横波的慢度和复速度方程。

Radio wave tomography technique and its application in underground radio wave probing

无线电波层析成像技术及在矿井坑透中的应用

Probing the medium with a time harmonic homogeneous plane wave gives the Christoffel equation. Then the complex velocities for homogeneous viscoelastic waves are calculated from it, while the attenuation factor and phase velocity and quality factor are obtained from the complex velocity.

使用均匀平面简谐波分析方法研究其频散关系，得到Christoffel方程，进而获得均匀平面波的复速度、相速度、衰减系数和品质因子的表达式。