In a mobile base-station the radio circuitry usually sits in a cabinet and is connected by a cable to an antenna on the tower overhead.
手机基站的无线电路通常在一个机柜里，由电缆连接到高架塔上的天线。
2
Data cabling is typically routed through overheadcable trays in modern data centers.
数据电缆通常是经由高架电缆盘在现代数据中心。
3
Electrical power line and cable workers construct, maintain and repair overhead and underground electrical power transmission and distribution systems.