This capability is critical in an urban environment or on rugged terrain where there are barriers to ground communication.

这种能力在有沟通障碍的城市环境或崎岖地形中至关重要。

youdao

When it is on the ground it can also be connected to a ground communication network which can be quickly disconnected.

位于地面时，它也能与地面通信网接通，还能迅速断开。

youdao

The article introduces the main functions and technical indexes of train-to-ground communication system in track loops.

本文介绍了一种轨间环线车地通信系统的主要功能和技术指标。

youdao

And yesterday, in an attempt to claw back ground from Verizon Communication's joint wireless venture with Vodafone and Sprint Nextel, Cingular yesterday launched BroadbandConnect--its own high-speed wireless Internet service--in 16 markets.

FORBES: Magazine Article

Satellite-based data links will improve communication between pilots and ground controllers, cutting out about 40% of voice communication over the radio.

ECONOMIST: Clearing the skies | The

The Americans are trying to use e-mail for routine ground-to-air communication, freeing voice channels and lightening the load for controllers.

ECONOMIST: A jam at 32,000 feet