A radio receiver and directional antenna used as a system to determine the angular direction of incoming radio signals.
无线方向探测器一种无线电接收和指向天线系统，用来确定收到的无线电信号的角方向
Point through which the incoming traffic flow enters a switching stage.
输入通信量流进入交换站(台)所通过的地方。
incoming trains; incoming mail; incoming mortar fire.
正进站的火车; 刚来的邮件; 正袭来的迫击炮
