这样一来，我们避免了将任何其他数据写入驱动器，并减少了任何随机磁头的移动。
That way, we avoided having any other data written to the drive, and reduced any random head movement.
然而，要使这一技术像硬盘那样运作，同样位数的数据要不断地穿过读写磁头。
For the technology to work like a disk, though, the same bits of data will have to pass repeatedly under the reading and writing heads.
这是磁头下的磁盘旋转到能读取所需要数据的正确位置所需要的时间。
This is the time it takes to correctly position the platter underneath the head so that the desired data can be accessed.
当磁盘通过磁头时，密度越大，它可以被读取的数据量就越大。
The greater the density, the greater the amount of data that can be read from the platter as it passes under the head.
对于固定的硬盘，磁头撞击通常会破坏数据，然而磁带或光盘驱动器的错误通常对数据盘碟是无害的。
A head crash in a fixed hard disk generally destroys the data, whereas the failure of a tape drive or optical disk drive often leaves the data cartridge unharmed.
这也表明磁头需要更紧地贴着盘片读取数据，或者磁场也可能影响到周围的扇区。
That also mean that the head must be closer to the disk or the magnetic field may influence the surrounding sectors.
我们曾提到如果硬盘遭遇磁头划伤就会产生令人担忧的结果，你将会丢失部分或全部的程序或数据。
We mentioned the alarming consequences that can happen if a hard disk suffers a head crash. You will lose some or all of your data or programs.
数据在光盘上的排列比在软盘或硬盘上更加紧密，原因是激光束可以比磁头聚焦到更小的点上。
Data can be crammed much tighter on a CD than on a magnetic floppy or hard drive because a laser beam can be focused to a much smaller point than magnetic heads.
磁头划伤对于硬盘来讲是灾难，它意味着磁盘上的数据部分或全部丢失。
A head crash is a disaster for a hard disk. It means that some or all of the data on the disk is destroyed.
最后利用三维表面形貌仪，分别对湿法刻蚀和干法刻蚀的磁头结构进行了数据分析。
The etching parameters and the photos of the head slider were presented. 3D surface microstructures of the head sliders were analyzed by Vecco MHT-III interferometer.
最后利用三维表面形貌仪，分别对湿法刻蚀和干法刻蚀的磁头结构进行了数据分析。
The etching parameters and the photos of the head slider were presented. 3D surface microstructures of the head sliders were analyzed by Vecco MHT-III interferometer.
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