The analytical results show that the key point to realize the optimal parameters is to obtain the high reversiblepermeability of the core, and some methods to resolve this problem are given.
分析结果表明，获得高可逆磁导率的磁芯是实现最优化参数的关键，并给出了解决这一问题的途径。
2
The permeability change is a reversible course.
其通透性的变化为一个可逆的过程。
3
It is proved that the permeability reduction caused by ageing is the rearrangement of reversible structure.