地面设备通过将站场信息处理后变为车载设备所需要的信息，通过无线电台将信息发送出去。
The station information is transformed into needed information by the ground equipment to send out messages by radio.
地面设备通过将站场信息处理后变为车载设备所需要的信息，通过无线电台将信息发送出去。
The station information is transformed into needed information by the ground equipment to send out messages by radio.
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