助航 meaning in Chinese

aid to navigation
aid-to-navigation
assistance

Plug and receptacle connectors for airport lighting cables
助航灯光电缆插头和插座
Isolation transformers for airport lighting
助航灯光隔离变压器
Code for construction and acceptance of civil airport visual aids
民用机场目视助航设施施工及验收规范
It is impossible to navigate safely without these navigational aids
如果没有这些助航设备，安全航行是不可能的。
Visible aidto navigation
视觉助航设施

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