The characteristics of mean return period curves of intensity are studied.

研究了烈度的平均重现周期曲线的特征。

Rainstorm design return period of one year, the ground water catchment time for 10 minutes.

暴雨设计重现期为一年，地面集水时间为10分钟。

Flood frequency (return period) is referring to recurrence probability of flood in certain period.

洪水频率(或重现期)是指一定时期内某种洪水出现的机率。

On the other hand, major systems are designed for severe rain storms with a design return period of 50 to 100 years.

另一方面，大型系统用于应对严重的暴雨，设计应对50到100年一遇的暴雨。

The analytical expressions of the optimal design intensity and return period are deduced by using the decision-making m…

使用该决策方法导出了最佳设计烈度和重现周期的解析表达式，从而得出了对抗震设计具有重要意义的结论。