A crane lifts a wooden truss, while a worker on the wall guides it into place for installation on the frame of the new house. The construction crew uses a crane to install the roof on the house.
素材ID:1768589710

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桁架体系结构熟练工作真实职业木材安全木匠材料装修项目专业发展机械承包商住房房地产工业工程天空支持新建吊装外部现场起重机行业工单结构设备施工屋顶建设者手册房子木制建筑屋顶财产劳动力主页吊装安装住宅框架