为一次场所激励的输运过程,必然会导致介质界面附近正、负离子浓度富集的空间区域的出现。本文把这一现象视为处于非平衡态的力学系统中浓度这一广义自由度的反常涨落,系统趋于平衡态的弛豫时间即是所要找的激发极化衰减时法的衰减时参数,这就给出了激发极化衰减时法的找水理论机制。 The transport process stimulated by a site will inevitably lead to the appearance of the spatial region enriched in positive and negative ions near the interface of the medium. This paper treats this phenomenon as the anomalous fluctuation of the generalized degree of freedom in the non-equilibrium mechanical system, and the relaxation time when the system approaches the equilibrium state is the decaying time parameter of the method , Which gives the theoretical mechanism to find water to stimulate the polarization decay method.