中长期地震概率预测 Long-and medium-term probabilistic earthquake prediction
概率地震需求模型 PSDM
概率地震需求分析 probabilistic seismic demand analysis ; PSDA
常见地震发生概率模型 probabilistic model for earthquake occurrence
地震危险性概率分析 probabilistic seismic hazard analysis
地震烈度发生概率 earthquake intensity occurrence probability
概率地震危险性分析 probabilistic seismic hazard analysis
以前的地震概率集中在特定的区域中，由于使用着各种各样的方法，使得它很难比较。
Previous quake probabilities focused on specific regions and used various methodologies that made it difficult to compare.
一些地质学家认为他们当前使用的方法，即基于概率的地震威胁分析，可能会低估地震威胁的可能性。
Some geologists feel that the method they used, probabilistic seismic hazard analysis, may underestimate the possibility of earthquake hazards.
在接下来的30年里，发生7级地震的概率达70%。
The chances of a magnitude-seven quake are put at 70% in the next 30 years.
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