This paper systematically describes and analyzes the structure of maintenance management system of communication and signaling system of JR Eastern Japan Express Rail Transit.
系统地描述和分析总结了JR东日本的新干线信号通信设备的维修管理体制。
This paper systematically describes and analyzes the structure of maintenance management system of communication and signaling system of JR Eastern Japan Express Rail Transit.
系统地描述和分析总结了JR东日本的新干线信号通信设备的维修管理体制。
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