7-Zip 是一款拥有极高压缩比的开源压缩软件。而lzma是其核心算法，拥有当前最优秀的压缩比与压缩效率。非常值得一看-7-Zip is a compression ratio of open source with a high compression software. The lzma is the core algorithm, with the most excellent compression ratio and compression efficiency. Is worth a