The train-ground radio communication system of Maglev trains is the information exchange channel for trains and the ground control center.

磁浮列车车地无线电通信系统则是列车与地面控制中心进行信息交换的通道。

youdao

The statistic model of air-ground radio communication channel is characterized by the multipath fading, Doppler power spectrum and delay power spectrum.

空地通信信道的主要统计特性包括多径衰落特性、多普勒功率谱和时延功率谱。

youdao

He warned that traditional media - television, radio and newspapers - are losing ground.

他警告说，传统媒体-电视，电台和报纸-正在失去地面。

youdao

Precise satellite navigation could remove the need for aircraft to fly longer routes that were partly designed around the old system of ground-radio beacons.

ECONOMIST: A jam at 32,000 feet

In the original song, Ground Control loses radio contact with the astronaut, Major Tom, implying that the mission has failed.

CNN: Astronaut sings Bowie's 'Space Oddity' in zero gravity

Each probe can pick up GPS signals and signals from eLoran, an enhanced version of Loran, the ground-based terrestrial radio-navigation system first used by the American and British navies during the second world war.

ECONOMIST: GPS jamming