annual occurrence翻译
annual occurrence的基本解释
读音: 美: 英:
每年发生的事件或现象。
例句
Flood was practically an annual occurrence in that district.洪水在这个地区几乎是每年都发生。At the same time, the real annual occurrence rate on larger magnitude can be calculated by the historic earthquakes (1300 ~ 1993) recording in the same region.同时，由该区域的历史地震(1300 ~ 1993年)可得到较大震级的实际年频次。
Population fluctuations of both species were erratic in respect to annual occurrence, the time of the peak density of fluctuations within years, and the hight of peak the density a given year.根据两种田鼠种群波动周期性、波动峰值出现的时间以及特定年份峰值的高度等特征，证明两物种波动均具有不稳定性。
短语
annual occurrence rate 年平均发生率annual occurrence probabilities 年出现概率
Seismic annual occurrence rate 地震年发生率
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