Read our information and specifications about flat express mailers used for urgent shipments of heavier documents.
阅读我们关于用于紧急运输较重的文件的扁平的快递信封的信息和规格。
The problem is the process reading data is somewhat "heavier" and it might not be able to read fast enough.
问题是读取数据的过程是有些“重”，它可能无法读取速度不够快。
In most cases data reduction has very little performance impact when data is simply being accessed or read, the heavier workload being when it first needs to be optimized.
在大多数情况下，当数据只是被访问或被读取时，数据缩减给性能带来的影响非常小；当数据首次需要优化时，工作负载比较大。
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