Twowaytransmission between the train and ground facilitates closed-loop acknowledgement.
车-地之间双向传输，信息闭环确认；
2
Due to the different motorcycle models, motorcycle twowaytransmission belt transmission, chain drive and three kinds of universal joint drive shaft transmission.
由于摩托车机型的不同，摩托车二级传动方式有皮带传动、链传动和万向节轴传动三种传动方式。
3
Based on the present monitoring technique, it is possible to realize long distance real time monitoring and two-way data transmission by using network communication.