Main crane parameters 主吊机参数
main engine overhauling crane 主机检修用吊车 ; 主机解体检修用吊车
main drain engine overhauling crane 主机解体检修用吊车
crane main hoist 行车主钩
crane main girder 起重机主梁
main beam of crane 吊车主梁
main drive of crane 吊车主传动机构
crane main box beam 起重机主梁
main girder of crane 起重机主梁
The path of main crane is planned according the heuristic information beforehand, the movement of following crane is planned according the movement of the main crane and the load.
主起重机的期望轨迹在一定启发式信息的引导下预先规划，从起重机轨迹则根据运动约束关系计算出来，它只能跟随主起重机运动。
The main bridge type crane, the erection and assembly has strict technical requirements, and a set of measurement methods to measure the installation result strictly.
桥架式桥式起重机的主体，其架设和组装都有严格的技术要求，并有一套严格的测量方法来测量安装结果。
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.
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。
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