从以上结果出发，本文提出了一个考虑地震中不同持续时间影响的抗震设计方法。

Then, a seismic design method considering the effect of strong ground motion duration is presented.

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现有的综合预测模型，大多未考虑系统的时变性和各种异常在震前所显示的不同持续时间。

For present synthetic models, time dependent characteristics of the system and different anomalous periods of various precursors shown before strong earthquakes have been not considered.

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研究目的是探讨不同持续时间和运动频率的游泳运动对大鼠血清mda、SOD、T - AOC的影响。

The purpose of this research is to investigate the impact of swimming with different duration and exercising frequency on mice's serum MDA, SOD and T-AOC.

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Okay, rain seems to be there for different amounts of time, doesn't it?

关于大雨持续的时间不同，是吗？

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