缩比，压缩系数；压缩效率

compression efficiency的用法和样例：

例句

When coding the wavelet-trees, zerotree is using neatly, which improves the compression efficiency.在对小波树编码时，灵活运用了零树的概念，提高了压缩效率。
With the continuing developments of multimedia and wide-band network technology, much higher efficiency in multimedia dada compression and real-time applications are required.目前，随着多媒体和宽带网络技术的发展，对多媒体数据压缩效率和应用的实时性要求越高。

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