发布时间:2025-02-01 05:58:47
最简单的单层建筑筏板基础厚度一般经验取值不小于300mm,每增加一层筏板的厚度不小于50mm。
由于地震频繁发生我们是否可以才用磁悬浮列车的方法把房子悬浮起来这样我们的房屋就不会地震的危害了
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