大部分之前的概念的基本问题在于，在通过漏电电流及配位方面，人们总希望固态断路器能像传统的机电断路器那样工作。
A fundamental problem with most prior concepts is the desire to have the solid state breaker behave like a traditional electromechanical breaker in terms of fault let-through current and coordination.
引入一个多层岩层相叠时其表面对电磁波入射的总反射系数的概念，从而导出了方法的正反演计算式及相应仪器的设计方案，并制造了测深仪器。
By defining a total reflection coefficient of natual EM field over multi layered medium, the forward and inversion equations for nature soutce EM sounding are established.
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