游客 180.137.146.x 发表于 2017-8-4 14:09 抗5.1.2amax=310 根据条文说明 竖向地震取0.65*310=201.5 抗5.3.4按第一组三类场地选特征周期=0.45 算出a ...
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手机版|小黑屋|第一证书
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