If your MongoDB server crashes, you should repair the database to check for any corruption and perform some data compaction.
如果MongoDB服务器崩溃，应修复数据库以检查错误并执行一些数据精简。
And the coding arithmetic of three kinds of data compaction modes of PDF417 is expounded.
文中对PDF417的三种数据压缩模式的编码算法有较详细的阐述。
This tactics carry out data compaction on data samples and extract initial diagnostic rule by using rough set theory.
该策略利用粗糙集理论对数据样本进行数据浓缩，提取初步的诊断规则。
This tactics carry out data compaction on data samples and extract initial diagnostic rule by using rough set theory.
该策略利用粗糙集理论对数据样本进行数据浓缩，提取初步的诊断规则。
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