IEC 62226的这一部分引入了耦合系数K，以便能够对复杂的暴露情况进行暴露评估，例如非均匀磁场或扰动电场。耦合系数K有不同的物理解释，这取决于它是否与电场或磁场暴露有关。 本部分的目的是对暴露在非均匀磁场中的简单人体模型更详细地定义耦合系数K。因此，它被称为“非均匀磁场的耦合系数”。

This part of IEC 62226 introduces the coupling factor K, to enable exposure assessment for complex exposure situations, such as non-uniform magnetic field or perturbed electric field. The coupling factor K has different physical interpretations depending on whether it relates to electric or magnetic field exposure. The aim of this part is to define in more detail this coupling factor K, for the case of simple models of the human body, exposed to non-uniform magnetic fields. It is thus called "coupling factor for non-uniform magnetic field".