radio beacon
无线电信标；无线电指向台
同义词
参考例子
1.The aircraft pilots picked up signals from a radio beacon.
飞机驾驶员听到了无线电航空信标的信号。
2.The emergency radio beacon (referred to as the beacon) operates in water or on land.
应急无线电信标（简称信标）可以在水中或地面工作。
3.Note: The emergency radio beacon operates automatically in a few seconds and drifts out to the end of the lanyard.
注：应急无线电信标将在几秒钟后自动工作并向外飘浮走，直到固定绳完全展开。
英文解释
n.
1.a characteristic signal emitted by a transmitter used for navigation
2.a radio station that broadcasts a directional signal for navigational purposes
网络释义
radio beacon
无线电信标; 无线电指向标，*电指向; 无线电导航台; 无线电指向标;
radio range beacon
无线电导航信标; 导航信标; 无线电测距标杆; 无线电航行示标;
radio marker beacon
无线电标志信标无线电指点标; 无线电标志信标; 标志无线电信标;
marker radio-beacon
标志无线电信标;
radio homing beacon
无线电归向信标; 无线电归航信标,归航信标;