短語詞組短語radio approach aid 無線電進(jìn)場(chǎng)輔助radio fixing aid [通信]無線電定位輔助設(shè)備radio audition aid system 無線助聽系統(tǒng)ground radio navigation aid 地麪無線電導(dǎo)航設(shè)備ship radio navigation aid 船載無線電導(dǎo)航設(shè)備radio navigation aid 無線電導(dǎo)航輔助設(shè)備radio hearing aid system 無線助聽系統(tǒng)radio homing aid [航]無線電歸航輔助設(shè)備radio landing aid 無線電著陸輔助設(shè)備 返回 radio aid