In spite of modifying coefficient , a modifying term is used to modify brandt ' s theory of sphere grain model ; this term ' s expression has been acquired , and the result is identical to biot - geertsma ' s theory in form and quantity , in which the two classics theories is in perfect harmony . it is also confirmed that the constitutive relation of carroll and n . katsube theory , and the bulk modulu of kuster scattered waves are identical to biot theory 在工程中的绝大多数情况下，该结果与biot - geertsma理论的结果在形式及数值上几乎完全一致，从而使这两个不直接相关的经典理论较好的统一起来。 ( 3 )在土动力学中常用的不排水条件下，分别证明了carroll的应力-应变关系中不排水体积模量、 kuster散射波理论的体积模量与biot - geertsma理论是完全一致的。
This paper particularly focuses on the theory and implementation of how to inverse underground structure by comparing incident wave and scattering wave , and recording the spare time of the waves , and forward calculations for igneous , metamorphic and sedimentary rocks are carried out to verify the feasibility 着重论述了利用慢衰减电磁波的入射波和散射波的振幅关系，以及电磁波的走时关系反演地下介质参数的基本原理及方法，同时，针对火成岩、变质岩和沉积岩，通过正演理论计算，说明了慢衰减电磁波测深的可行性。
