The overall objective, technological crux, system function and application of UM71 track circuit technological profession management system were outlined in this paper.
对UM71轨道电路技术业务管理系统，从总体目标、技术关键问题、系统功能和使用情况等几个方面进行了详细论述。
The overall objective, technological crux, system function and application of UM71 track circuit technological profession management system were outlined in this paper.
对UM71轨道电路技术业务管理系统，从总体目标、技术关键问题、系统功能和使用情况等几个方面进行了详细论述。
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