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我厂根据铁路施工需要,将D80-7拖拉机改装成履带液压装载机。改装设计,试制于1978年2月完成(见下图)。该机试车时,除因自制油泵、液压油缸内
According to the needs of railway construction, our factory will convert D80-7 tractor into tracked hydraulic loader. Modified design, trial production completed in February 1978 (see below). When the machine is tested, except for self-made oil pump and hydraulic cylinder