这颗卫星上装有无线电收发设备和电源，可对信号接收、处理、放大后再发射，从而大大提高了通信质量。
Telstar is launched as the first "active" communications satellite—active as in amplifying and retransmitting incoming signals, rather than passively bouncing them back to Earth.
爱沙尼亚接收的第一批装备包括发射装置、训练弹、模拟器以及测试和维护设备。
The first consignment delivered to Estonia included firing equipment, training missiles, simulators and testing and maintenance equipment, required for using this equipment.
很快，人们开始使用无线电报公司的设备进行远程发射和接收无线电讯息。
Very quickly, people began sending and receiving radio messages across long distances using equipment made by Marconi's company.
应用推荐