As the map is mainly made for the use in land planning and earthquake resistant design of moderate-and small-sized engineering projects,the stan- dard of anti-seismic design takes the probability of exceedance as 10% within 50 years.
英
美
释义
该区划图主要是为国土规划和中小型工程抗震设计所用,因此设防标准取50年内超越概率为10%25。
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