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三、线路维修作业的组织和工艺 从近十年来铁路科学技术发展的趋势来看,线路维修作业的组织和工艺大致有两种制式:周期性计划维修制和非定期、有针对性的
Third, the line maintenance operations organization and technology From the past decade the development trend of science and technology of the railway point of view, line maintenance operations organization and process roughly two kinds of standard: periodic plan maintenance and non-regular, targeted