定义 中文名称： 数据压缩比 英文名称： data compression ratio 定义： 为衡量数据压缩器压缩效率的质量指标。是指数据被压缩的比例。 应用学科： 地理学（一级学科）； 遥感应用（二级学科） 以上内容由 全国科学技术名
双语例句
1
A system model of image sequence coding based on wavelet transform is established. Then a high datacompressionratio is realized and satisfactorily reconstructed image can be obtained.
建立了基于小波变换的运动图像编码系统模型，实现了数据的高效压缩并得到了良好的恢复图像。
2
As a result, compression allows more data to be in memory than without compression, which increases the buffer-pool hit ratio and makes higher utilization of the available memory.
因此，相比不压缩，压缩能让内存存储更多的数据，进而提高了缓冲池命中率和可用内存的利用率。
3
Compression ratios will vary, but a 2:1 ratio can be expected for most data types, and some, like Oracle databases, will compress even further.