助航系统 meaning in English
navaid
Examples
- The automatic identification system ( ais ) is a kind of new - type navaid and equipments . the article expatiated the basic principle of the modulation mode named gmsk
船舶自动识别系统( ais )是一种新型的助航系统及设备，目前已发展成通用自动识别系统( uais ) 。