全美17个城市大约有30家电视台已经在电视转播塔安装了额外的传输仪，传送本地实况节目到移动信号接收器，而且几乎免费。
Some 30 television stations in 17 cities across the country have now installed additional transmitters on their towers to beam live local broadcasts to mobile receivers mostly for nothing.
发射塔负责在本地区覆盖范围内的某一特定六角形区域中传送数据。
The cell tower is responsible for delivering local geographical coverage in a certain hexagonal region.
汇集到机舱底座的雷电流，传送到塔架，由塔架本体将雷电流传输到底部，并通过接入点传输到接地网。
Lightning electricity is collected in the base of engine, transmit to tower, from the tower to the base, and by earthing point to earthing net.
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