超高的读性能(block compression)，一般可以通过设置块大小(block size)来控制压缩阈值，当然，块设置的越大，压缩率就越高，但是相应的随机读性能往往会降低。
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block compression test 耐湿粘压试验
lead block compression test 铅柱压缩试验
zero block compression 零值块压缩
block compression strength detail 砌块抗压强度
block data compression 分块数据压缩 ; 数据块压缩
From the experimental results, the following conclusions were drawn: (1) Block compression force distribution on the driving pulley is significantly different from that on the driven pulley.
从实验结果可以作出以下结论：(1)推块压缩力分布在主动带轮上明显不同于从动带轮。
Outside of compression, supporting variable block sizes also means that you can tune the block size for the particular workload expected for improved performance.
在压缩以外，支持可变块大小还意味着您可以针对所期望的特定工作量优化块大小，以便改进性能。
Multidimensional Clustering (V8 GA) : Implements a form of index compression by using block indexes, one index entry for thousands of records.
多维集群(V 8 GA)：使用块索引，数千个记录共用一个索引条目，实现索引压缩。
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