The single most important parameter in the design of a ferrite memory is the core switching time.
在铁素体存贮器设计中，一个重要的参数是磁芯翻转时间。
The periodic switching of the magnetic north and south poles of the Earth throughout time, probably as a result of movement of fluid within the Earth's core.
地球的地磁北极和南极随时间作周期性的变换，或许是地核内部流体运动的结果。
The periodic switching of the magnetic north and south poles of the Earth throughout time, probably as a result of movement of fluid within the Earth's core.
地球的地磁北极和南极随时间作周期性的变换，或许是地核内部流体运动的结果。
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