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简要阐述《线规》修订中各级铁路旅客列车最高设计行车速度、路段设计速度和路段最小长度等标准制订的技术经济依据。
The technical and economic basis for the formulation of the maximum design speed of passenger train at all levels, the design speed of the road section and the minimum length of the road section in the revision of “Wire Gauge” is briefly described.