The coded signal is received by satellite dish aerials.编码信号由碟形卫星天线接收。Something must have gone wrong with the satellite link.卫星连接一定出了毛病。The satellite had been inactive since its launch two years ago.该卫星自从两年前发射以来一直没起作用。...
On Key Technologies of the On - Board ATM Switching Satellite Communications System.星上ATM交换卫星通信系统的关键技术研究.Digital TeleVision ( DTV ) broadcasting is realized by satellite, cable and terrestrial wireless.数字电视广播主要通过卫星 、 有线、...