We can give occurrence probability of earthquake in any predictable time by means of Weibull distribution model of Various regions.

可以通过各地震区的韦布尔概率模型获得任一预测时间的地震发生概率。

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This model takes into account the transient stability constraints and contingency occurrence probability and system instability impacts.

该模型计及了暂态稳定性约束、事故发生概率及系统失稳损失。

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Occurrence probability of intensity and exceeding probability of intensity are all important indicators of seismic hazard for a given site.

地震烈度发生概率和地震烈度超越概率都是衡量场地地震危险性的重要指标。

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But it said this had "only a low probability of occurrence" and more work was needed.

BBC: 9/11 third tower mystery 'solved'

Thus, by deliberately disrupting all redundant safety systems, saboteurs can cause a severe event that would have had only a very low probability of occurrence if left to chance.

FORBES: One American's Struggle to Save New York City from Cyber Saboteurs

This led him to calculate that the information content of any event was proportional to the logarithm of its inverse probability of occurrence. (Unlike many popular-science books that eschew equations, Mr Vedral includes a couple and tries his best to explain them to the reader.) What does the equation mean?

ECONOMIST: Information theory