Ключевые слова: aerial, antenna, architecture, array, astronomy, background, blue, broadcast, business, cable, china, communication, connection, digital, equipment, flow, global, industrial, information, internet, large, lines, morning, network, night, observatory, orbits, outdoors, power, radar, radio, radio waves, receiver, research, satellite, science, signal, silhouette, sky, stars, summer, sunrise, technology, telescope, tower, transmission, transmitter, wave, wireless,