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清晰!还有6个和8个的.一般来讲,磁头可以写信号,也能读信号,为了提高质量,将这两种功能分开就出现了多磁头,后来的分工更细了,包括磁道纠偏....当然也不是磁头越多越好啦,容易坏呀!

aabb (爱吃水草的鱼)
(#16892@0)
2000-12-2 -04:00
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