freight traffic direction 货物流向
nonpredominant traffic direction [交] 非主要运输方向
traffic direction sign 运行方向标
traffic direction circuit 运行方向电路
traffic direction system 交通指挥系统
outgoing traffic direction 去话话务量流向
traffic direction reversal 改变运行方向
traffic direction preference 优先运行方向
应用推荐