说明：  双相介质的交错网格有限差分波场模拟与AVO属性分析程序，包含了不同精度的交错网格程序，特征值分析法边界吸收条件，双相介质的弹性参数计算程序，以及AVO属性计算分析程序
(Two-phase media of the staggered-grid finite-difference wave field simulation and AVO attribute analysis program, including the different precision staggered grid procedure, characteristic absorption of the boundary value analysis conditions, two-phase media of the elastic parameters calculation procedures, as well as calculation of AVO attribute analysis program)