visual-aural range 目视和音响信标 ; 视听范围

aural radio range 无线电导航有声信标 ; 音响无线电导航 ; [电子] 听觉无线电测距台

VAR Visual C Aural Range 视听范围

visual-aural radio range 目视和音响无线电信标

visual aural radio range 视听无线电导航台

Visual Aural Radio Range VAR 视听无线电导航台

visual aural VHF radio range 视听两用极高频导航台

visual-aural omnidirectional range 目视和音响全向无线电信标

aural visual range beacon 可听可见式信标