The use of Radio Frequency beacons can also improve the position accuracy of vehicles in areas with bad GPS coverage - for example inside underground car parks and multi-storey buildings.是什么意思_The use of Radio Frequency beacons can also improve the position accuracy of vehicles in areas with bad GPS coverage - for example inside underground car parks and multi-storey buildings.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句