mix line meaning in English

混频线

By refering to the experiences of guangshen mixed line , on the basis of widely collecting and digesting railway theories and testing results from home and abroad , this article mainly discussed track maintenance code . method and management system , and put forward track maintenance main parameters and maintenance method for safety of running x2000 tilting train ( 200km / h ) in guangshen line
本课题通过分析研究收集到的国内外高速铁路线路维修养护方面的资料，开展对广深线运行x2000以来的线路状态进行调查，掌握存在的线路病害情况，分析研究线路技术条件，对照现行的暂行规则调查在养护维修工作中的条文执行情况、存在问题及改进方法和意见。