空间天气怎么使铁路信号灯由绿变红呢？
How could space weather switch railroad signals from green to red?
铁路信号是铁路运输安全的重要保障之一。
Railroad signal is one of the important guarantees for railroad traffic safety.
铁路信号是保证行车安全的重要行车设备。
一些重要的信息如行车信息、铁路信号、客票信息等均通过网络进行传输。
The information of traffic, signals, production power and so on, are transmitted in it.
一些重要的信息如行车信息、铁路信号、客票信息等均通过网络进行传输。
The information of traffic, signals, production power and so on, are transmitted in it.
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