In current engineering research area, using common digital signal processor to process real-time digital signal is a hot subject, which provides a kind of very challenge work.

在当今的工程领域中，采用通用数字信号处理器进行实时数字信号处理是一个非常热门的主题，并且是非常富有挑战性的工作。

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And for a common currency to work it must be applied across something which is at least close to being an optimal currency area.

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