The analytical results show that the key point to realize the optimal parameters is to obtain the high reversible permeability 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。
The permeability change is a reversible course.
其通透性的变化为一个可逆的过程。
It is proved that the permeability reduction caused by ageing is the rearrangement of reversible structure.
证实了时效引起的磁导率衰减是可逆的结构重排过程。
Conclusions the combine use of the high MI ultrasound and the high dosage of the ultrasound contrast agent can enhance the permeability of the BBB, but this change is reversible.
结论高机械指数的体表超声辅以高剂量超声造影剂在经颅脑超声造影中可导致血脑屏障通透性增加，但在造影检查后，这种改变可自行恢复。
The permeability loss is not reversible since the reservoir pressure decreases gradually as gas exploitation is conducted in abnormal pressure gas reservoirs.
随着异常高压气田开发过程的进行，地层压力逐渐下降，进而诱发岩石渗透率损失是不可逆的。
The permeability loss is not reversible since the reservoir pressure decreases gradually as gas exploitation is conducted in abnormal pressure gas reservoirs.
随着异常高压气田开发过程的进行，地层压力逐渐下降，进而诱发岩石渗透率损失是不可逆的。
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