radio beam
【无线电】射电波束( = beam)
同义词
参考例子
1.A radio beam would extend much farther than a signal of equivalent power that is broadcast in all directions.
相较于具有相同能量、但朝著各个方向播送的讯号，聚集成束的无线电波可传递得更远。
2.By measuring the refraction of this radio beam, we will be able to plot the temperature and density profile of Pluto's atmosphere from high altitude down to the surface.
藉由测量无线电波的折射，我们可以描绘出冥王星大气层（从高空一直到表面）的温度与密度分布轮廓。
3.The transmitter stays put, with its radio beam pointing in the direction we wish to explore, and the sail travels along the beam, picking up momentum from the radio waves.
发射器固定不动，它的无线电波指向我们希望探测的方向；探测器沿着电波的方向运动，从无线电波获取动力。
英文解释
n.
1.a signal transmitted along a narrow path; guides pilots in darkness or bad weather
网络释义
radio beam
无线电射线; 无线电波束; 无线电导航波柱; 无线电，导航线;
radio directional beam
定向无线电射束;
radio landing beam
无线电着陆指向波束;
radio-beam transmitting
定向无线电发射;
radio-beam transmitting station
定向无线电发射台;