Vor - very high frequency omnidirectional range 甚高频全向信标
Visual - aural omnidirectional range 目视和音响全向无线电信标
Very omnidirectional range 甚高频全向信标
Vor aeronautical radio navigation aids . part 2 : technical requirements for very high frequency omnidirectional range 航空无线电导航设备.第2部分:甚高频全向信标
英文解释
a navigational system consisting of a network of radio beacons that provide aircraft with information about exact position and bearing 同义词:omnirange, omnidirectional radio range,