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主要完成单位 兰州机车工厂、西南交通大学 N1004型全液压伸缩臂铁路起重机在机车车辆、线路出现事故时,除具备定长臂式铁路起重机的
Major completion units Lanzhou locomotive factory, Southwest Jiao Tong University N1004 full hydraulic telescopic arm crane in rolling stock, line accidents, in addition to having a fixed long arm railway crane