最后一步，用起重机将高度隔热的外墙和窗户安装进去。
In the final step, heavily insulated exterior walls and windows are slotted in by crane.
下一步是生产窗和隔热层，之后是安装预制浴室和厨房模块，最后这个单元被起重机吊起来放置在这座建筑的相应位置上。
Windows and insulation came next, and then prefabricated bathrooms and kitchen modules were installed. Finally the unit was lifted by crane into position on the building.
安装前要对起重机安装跨度，金属结构主梁的拱度、水平旁弯，小车轨道高低差、轨距偏差，桥架对角线等进行测量。
To install the crane span before installation, camber, level of metal structure of main girder bending, trolley rail height difference, gauge deviation, diagonal bridge survey.
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