The electric switch machine is an essential part of the railway signal system and plays an important role in guaranteeing the safety of the trains and promoting the transportation efficiency.
电动转辙机是铁路信号系统的关键设备，对保障行车安全、提高运输效率具有极其重要的作用。
The electric switch machine is an essential part of the railway signal system and plays an important role in guaranteeing the safety of the trains and promoting the transportation efficiency.
电动转辙机是铁路信号系统的关键设备，对保障行车安全、提高运输效率具有极其重要的作用。
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