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推导了二维TTI介质的相速度表达式,并且依据推导出来的相速度表达式,模拟并分析了二维TTI介质相速度的传播快照以及TI介质相速度的传播快照;对比并分析了TTI介质和TI介质模型的相速度理论计算值的X分量特征的差异。TTI介质的相速度研究具有较高的理论研究价值和实际应用价值．
The phase velocity expression of two-dimensional TTI media was deduced. According to the derived phase velocity expression, the phase velocity of two-dimensional TTI media and the phase velocity of TI media were simulated and analyzed. The contrast of TTI media And the X-component features of the theoretical theoretical phase velocity of the TI media model. The study of phase velocity in TTI media has high theoretical and practical value.