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对EBJl60—HN型掘进机工作臂结构进行改进,变内联接方式为外联接方式,变压力联接方式为拉力联接方式,变维修时间接作业为直接作业。
The EBJl60-HN boring machine working arm structure is improved, variable internal connection way for the external connection, variable pressure connection way for the tension connection, change the maintenance time for the job for the direct operation.