In a virtual storage system, a fixed-length block of contiguous virtual addresses copied as a unit from memory to disk and back during paging operations.

在虚拟存储系统中，一个固定长度的连续虚拟地址块，在分页操作过程中它作为一个单位在内存和磁盘之间来回复制。

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Portable MP3 player generally adopts the nonvolatile storage chip to make the memory at present, the capacity is small, the unit has high costs, and does not adapt to play for a long time.

目前便携式MP3播放器一般采用非易失性存储芯片作存储器，容量小、单位成本高，且不适应长时间播放。

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At the same time, compared with the storage unit of an ordinary resistance type random memory, the invention further simplifies the device structure, and can improve the thermal stability of devices.

同时，与普通电阻式随机存储器的存储单元相比，进一步简化了器件结构，并能提高器件的热稳定性。

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The performance gains that flash memory provide will cause solid growth in the enterprise storage market, Burke predicted that unit growth will be 42% from 2011 to 2012 with capacity growth of 90% but over the same time period enterprise HDDs will grow 25% in units and 83% in storage capacity.

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And in the age of cheap removable memory, it's a shame there's no way to expand the unit's very limited storage capacity.

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The unit has 32 megabytes of memory and, as we suspected, uses the SD memory card for removable storage.

FORBES: Magazine Article