N an electromagnet that can both read and write information on a magnetic medium such as magnetic tape or disk 读写头 [计算机]
The preamp has much more tracks going to the heads (right side) than to the HDA (left side), it's because HDD can work only with one "head" (pair of read an write elements) at a time.
前置有更多的轨道去头（右侧），而不是在HDA（左侧），这是因为硬盘只能有一个工作的“头”（读一写的一次元素）对。
In many sources you can find that sliders claimed as actual heads but a slider itself is not a head it's a wing which helps read and write elements fly under the platter's surface.
你可以在许多来源声称发现滑块作为实际负责人，而是一个滑块本身并不是一个头上的一读，写，帮助下飞行元素盘片表面的翅膀。
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