自1971年美国圣费南多地震爆发以后，结构延性抗震设计的概念在世界范围内广泛受到重视。
The concept of anti-seismic design based on structure's ductility has been worldwide accepted and paid much attention to since the San Femado seism in the United States in 1971.
自1971年美国圣费南多地震爆发以后，结构延性抗震设计的概念在世界范围内广泛受到重视。
The concept of anti-seismic design based on structure's ductility has been worldwide accepted and paid much attention to since the San Femado seism in the United States in 1971.
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