The numerical method uses finite volume method in space and advances the solution in time using dual time stepping method.

空间采用中心平均的有限体积法进行离散，时间方向采用双时间法隐式推进求解。

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The technique of local time stepping, pressure damping and implicit residual smoothing are used to increase the convergence rate.

采用了当地时间步长、压强阻尼及隐式残值平均方法来加速收敛。

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Residual smoothing, local time stepping and a new multi-grid scheme were employed to improve calculative efficiency and accelerate the convergence.

为提高计算效率，采用了多重网格法、当地时间步长和残差光顺等加速收敛措施。

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But at the same time, stepping in front of a speeding train can also be painful in the short run.

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You would then waste less time and energy stepping to and from the haystack.

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Calzaghe - who had won the award three times previously - cemented his place as one of boxing's all-time greats by stepping up from the super-middleweight division he ruled for more than a decade to beat American greats Bernard Hopkins and Roy Jones Jr at light-heavyweight.

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