Floppy diskrecording capacities are small and access times are slow relative to hard disk drives, but they provide a convenient means of storing and transferring data.
相对于硬碟机而言，软式磁碟的记录能力很小存取时间很慢，但它提供了储存和传送资料的便捷方法。
2
With the focus serve fixed on the rotating shaft to adjust the focus point up and down, it is capable of accurately making up position change of the diskrecording area at rotation.