磁场倒转 meaning in Chinese

magnetic reversal
reversal

So the rare field reversals are most likely caused by larger changes in the flow in the outer core , or in the way in which the field lines are wound into the flow by diffusion
这样，不经常发生的磁场倒转，很可能是由外核流体或磁场曲线通过扩散宛然进人流体方式发生较大的变化而引起的。
Fluid motions try to reverse the field on a few thousand years timescale , but the solid inner core tries to prevent reversals because the field cannot change ( diffuse ) within the inner core as quickly as in the fluid , outer core
尽管流体运动会在几千年的时间尺度上使磁场倒转，但因为磁场的变化(扩散)在内核里不能与在外核的流体中一样快，所以固体的内核会尽力阻止倒转。