... radio beacon 无线电指向标，电指向，无线电航空信标 radio beam 无线电射束，射电波束 radio beam station 定向无线电台 ...
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radio beam coupler 无线电波束耦合器
tuning for radio-beam 定向接收调谐
coded radio beam 编码无线电波束
radio-beam guidance 无线电波束制导
radio beam flying 波束飞行
radio beam deviation indicator 无线电波束偏离指示器
radio beam station 定向无线电台
code radio beam 无线电电波信号
radio-beam transmitting [通信] 定向无线电发送
N a narrow beam of radio signals transmitted by a radio or radar beacon, radio telescope, or some other directional aerial, used for communications, navigation, etc 无线电波束 (Sometimes shortened to beam)
It is far from simply a radio beam passing through a vacuum at "the speed of light".
这远不像一束无线电波“以光速”穿过真空层那样简单。
Like the searchlight beam, the radio beam cannot be made very sharp; it tends to spread.
无线电射束也象探照灯的光束一样，是不能高度集中的；它总要散开。
Ironically, the detailed reasons as to how the radio beam is produced may not be important astronomically.
具有讽刺意义的是，产生射电波束的详细原因在天文上，这也许并不重要。
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