very-high-frequency radio beacon 甚高频无线电信标 low frequency non-directional radio beacon 低频全向无线电信标 medium frequency non-directional radio beacon 中频全向无线...
基于18个网页-相关网页
甚高频全向无线电信标 VHF omni-directional range beacon ; frequency omnidirectional radio range
应用推荐