发布时间:2025-01-31 17:36:03
空气胶管的工作压力一般是2MPa(兆帕),也就是20公斤压力,爆破压力是工作压力的3倍,是6MPa。
根据建筑地基基础设计规范gb 500072011下列何种建筑物的桩基可不进行沉降验算
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