... 梁计算：beam calculation 梁护面：girder casing 梁构造：beam construction ...
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... 大梁 girder 大梁护面 girder casing 大卵石 cobblestone ...
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girder r casing 梁护面
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As the truck was entering the bridge, its load -- which Rudeen described as an equipment casing form for a drill rig -- hit a support girder, causing the bridge to collapse.
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