radio navigation aids meaning in Chinese

无线电导航设备

Aeronautical radio navigation aids and atc radar station siting criteria
航空无线电导航台和空中交通管制雷达站设置场地规范
Dme aeronautical radio navigation aids . part 3 : technical requirements for distance measuring equipment
航空无线电导航设备.第3部分：测距仪
Ils aeronautical radio navigation aids . part 1 : technical requirements for instrument landing system
航空无线电导航设备.第1部分：仪表着陆系统
Ndb aeronautical radio navigation aids . part 4 : technical requirements for non - directional radio beacon
航空无线电导航设备.第4部分：无方向性信标
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