... Why they come » 他们为什么来 Be in a nice hobble, decide on what path to follow my heart！ » 好的那，决定心中走什么道路 girders » 大梁 ...
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...长螺旋钻孔机；平台设计；主梁；工程力学；校核 [gap=718]Keywords: long helical drilling machine; Platform design; Girders; Engineering mechanics; checking.
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girders and webs 水平桁材和垂直桁材
steel truss girders 铁路平板车 ; 钢桁梁
boiler ceiling girders 锅炉天花板大梁 ; 锅炉顶梁
concrete girders 混凝土箱梁
installation with girders 梁工安装法
Bottom girders and brackets 船底纵桁和肘板
N-COUNT A girder is a long, thick piece of steel or iron that is used in the framework of buildings and bridges. 大梁
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