It is pointed out that except basic design earthquake intensity the probabilistic definition of the two levels of earthquake protection is ambiguous that can only be understood in average meaning.
指出除基本烈度地震以外，另外两个水准的概率含义是不明确的，只能从平均意义上去理解。
The research of physical measure of seismic intensity is a history and basic subject and the study of damage potential of earthquake ground motion has been worked on for more than one hundred years.
地震烈度物理标准是一个具有悠久历史的基础性的研究课题，由它引发出的地震动破坏势研究也已开展了一百多年。
Then, the paper evaluated the anti-seismic performance of the structure under basic and rare earthquake intensity.
然后对结构在基本烈度和罕遇烈度地震作用下的抗震性能进行评估。
Then, the paper evaluated the anti-seismic performance of the structure under basic and rare earthquake intensity.
然后对结构在基本烈度和罕遇烈度地震作用下的抗震性能进行评估。
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