时钟频率的提高，时序收敛性问题则变的越来越重要，时序的优化则成为设计的主要目标。

Higher work frequency makes timing convergence more and more important, timing optimization becomes the main objective of the design.

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针对深亚微米工艺下版图设计中存在的时序收敛问题，提出了一种区域约束的版图设计方法。

A new method for layout design based on region constraints was presented to resolve the timing closure problem of physical design in deep sub-micron technology.

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该方法的优点包括更好的质量的结果的一个设计，更少的时序收敛的迭代和不太复杂的设计流程。

The advantages of the method include better quality-of-result of a design, fewer timing closure iterations and less complex design flow.

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该方法的优点包括更好的质量的结果的一个设计，更少的时序收敛的迭代和不太复杂的设计流程。

The advantages of the method include better quality-of-result of a design, fewer timing closure iterations and less complex design flow.

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