truss setting at ground floor的意思|示意
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底层桁架设置
truss setting at ground floor的网络常见释义
底层落地桁架 ... 带空腹节间的单斜式平行弦桁架 parallel-chord pratt truss with diagonals omitted 底层落地桁架 truss setting at ground floor 组合效应 composite effect ...