Compress &Decompress of Files 文件的压缩与还原
JPEG tutorial, Include video compress decompress and some other video process method.
JPEG教程，包括视频图象压缩与解压缩，以及其他视频处理算法。
This is determined in the apps ability to compress or decompress files with substantial power and extraction speeds.
这是根据程序打包压缩文件的实际能力和提取速度决定的。
A certain amount of CPU resource is used to compress the data before it is stored, and then to decompress the data when it is read from the external storage device.
在数据被存储之前压缩数据，以及在从外部存储设备读出数据时将数据解压，这都需要使用一定的CPU资源。
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