beam being and girder slab的意思|示意
美 / /
英 / /
梁和梁板
beam being and girder slab的网络常见释义
交梁平板 ... beam being and girder framing 治梁梁格结构 beam being and girder slab 交梁平板 beam being and slab floor 梁板式楼板 ...