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1.道碴性能通过现场研究,找出道碴破坏(等级下降)与道碴材料性能之间的关系,从而建立预测道碴材料现场性能变化的实验室方法。2.轨道维修计划模型
1. Ballast Performance Through on-site research, the relationship between ballast damage (grade degradation) and the performance of ballast materials is identified to establish a laboratory approach to predict changes in site performance of ballast materials. 2. Track maintenance plan model