| 释义 |
〔teletext〕An electronic communications system in which printed information is broadcast by television signal to sets equipped with decoders.电视文字广播：一种电子通讯系统，打印的消息通过电视信号播送到配有译码器的接收机上〔teleran〕An air-traffic control system in which the image of a ground-based radar unit is televised to aircraft in the vicinity so that pilots may see their positions in relation to other aircraft.电视雷达导航系统：把地面雷达的图像播送到邻近地区的飞机中，使得飞行员能看到他们与其它飞机相关位置的空中交通指挥系统 |