Based ITS Intelligent Vehicle location and navigation system could be divided into three levels: autonomous navigation systems, communications systems and two-way one-way communication system.
基于ITS的智能车辆定位导航系统可划分为三个层次：自主导航系统、单向通信系统和双向通信系统。
The spread of mobile phones is one-way can also be a two-way, but also a two-way communication to even more, such a mode of transmission of a highly interactive.
而手机传播既可以是单向的也可以是双向的，还可以是双向甚至是多向传播，这样的传播方式具备很强的交互性。
The communication at any level is not a one-way transmission but a dynamic two-way communication.
无论在哪个层面上，这种交流都不是单向的传动，而是一种动的双向交流过程。
The communication at any level is not a one-way transmission but a dynamic two-way communication.
无论在哪个层面上，这种交流都不是单向的传动，而是一种动的双向交流过程。
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