Now, if the current is sent one way through the read/write head the area is polarized in one direction.
如果当前通过读写头来发送指向一个方向的信息,这个区域的磁极指向某个方向。
哈佛公开课 - 计算机科学课程节选
If the current is sent in the opposite direction, the polarization is reversed.
如果当前发送一个相反的方向,磁极指向就反转。
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