This paper introduces key wayside equipment of CTCS2 on existing railways and describes the renovation of ATP wayside equipment in an actual engineering case on Jiao-Ji test line.
介绍了既有线ctcs2列控系统的关键地面设备，结合工程实际，介绍了胶济线试验段atp配套地面信号设备的改造。
To analyze and solve the difficult traffic problems comprehensively and systematically, the redevelopment planning of Ji 'nan central commercial area as a case is advanced.
并以济南市中心商业区改造规划为例，以期全面系统地分析和解决这一地区的交通难题。
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