柱梁线刚度比影响初始的弹性弯矩图，其中包括初始次弯矩。
The ratio of column rigidity to beam influences the original elastic moment and the secondary moment.
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.
生产线可实现卡车底盘纵梁及车厢边框的冲制，具有精度高、生产周期短、灵活性强等优点，并可大大减少生产环节的库存量。
The line can punch the truck chassis side-member and side panel of carriage with high precision short period and high agility and reduce the storage in production greatly.
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