本文运用系统科学中的结构-功能方法对复电阻率法中所研究的“局部”大地系统——复阻抗系统的结构与功能进行了探讨。以双频观测方案为例,对复阻抗系统的几种响应进行了频谱分析,讨论了复阻抗系统结构的多解性和等效性,并给出了各种响应所对应的四端网络及其阻抗转移函数。 In this paper, the structure and function of the “local” earth system-complex impedance system studied in the complex resistivity method are discussed using the structure-function method in system science. Taking the dual-frequency observation scheme as an example, the spectrum analysis of several responses of the complex impedance system is discussed. The multi-solution and equivalence of the complex impedance system is discussed. The four-terminal network corresponding to each response is given. The impedance transfer function.