framing stair well beam的意思|示意
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框架式楼梯井梁
framing stair well beam的网络常见释义
楼梯井框架梁 ... footing beam 底脚梁,基础梁 framing stair well beam 楼梯井框架梁 free beam 简支梁 ...
楼梯井杠架梁 ... 自承式楼梯 self-supporting stairway 楼梯井杠架梁 framing stair well beam 楼梯井框架梁 framing stair well beam ...