The rebuilding project of railway special communication system is going on. Some problems in the net constituting and construction should be noticed are introduced.
当前铁路专用通信的数字化改造正在进行，介绍组网和建设中应注意的问题。
The rebuilding project of railway special communication system is going on. Some problems in the net constituting and construction should be noticed are introduced.
当前铁路专用通信的数字化改造正在进行，介绍组网和建设中应注意的问题。
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