In addition, compare Firebug output with your actual perceived performance.

另外，将Firebug输出与实际的性能进行比较。

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In the lab, we've achieved a 1,500 container grid with no real difference in perceived performance.

在实验室中，我们实现了一个包含1500个容器的网格，而在性能上并没有感受到明显的影响。

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This results in a perceived performance boost because data can be retrieved and processed faster.

这会使用户感觉到性能大大提升，因为数据的检索和处理速度变得更快。

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Many investors who outsourced their portfolios to professionals "were massively disillusioned by the perceived performance of their advisers" in 2008, says Ed Tracy, head of a Deloitte Consulting LLP group that provides consulting and other services to financial-services companies.

WSJ: A New Era for Do-It-Yourself Investing

These flows are, in turn, affected by the performance and perceived relative value of other investments.

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By changing the sequence of two scenes, Cassidy gave the film an added power -- which made all the difference to how his performance was perceived, Holbrook says.

CNN: Veteran actor Hal Holbrook's loving his Oscar nod