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The portal supportor system is emphasized which is formed of bailey beam and steel pipe support.
着重介绍了施工中由贝雷梁和钢管支柱构成的门式支架支撑系统以及理论检算和挠度计算。
youdao
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The portal supportor system is emphasized which is formed of bailey beam and steel pipe support.
着重介绍了施工中由贝雷梁和钢管支柱构成的门式支架支撑系统以及理论检算和挠度计算。
youdao