Vor very high frequency omnidirectional radio range 超短波全方向式無線標識
Performance requirements and test methods for doppler very high frequency omnidirectional radio range 多普勒甚高頻全向信標性能要求和測試方法
英文解釋
a navigational system consisting of a network of radio beacons that provide aircraft with information about exact position and bearing 同義詞:omnirange, omnidirectional range,