With data compression and decompression of the hardware support.
具有数据压缩和解压缩的硬件支持。
With the promotion of both demands, the need for data compression and decompression is generated.
在这两种需求的推动下，对数据压缩的需求产生了。
People can store a file with a smaller storage space without changing the file's own condition, and can restore the file; that is the purpose of data compression and decompression.
人们可以将文件在不改变其本身的条件下，将其以更小的占用空间存储，并且在需要的时候将文件恢复成原有的样子，这就是压缩目的。
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