large block steel box girder
...键词：桥梁建设；大块件钢箱梁；纵推横移；免吊装施工 [gap=674]Key words: bridge construction; large block steel box girder; vertical and horizontal move; free hoisting construction ..
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large block steel box girder
大块钢箱梁
以上为机器翻译结果，长、整句建议使用 人工翻译 。