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SCIENCE AND EDUCATION FILM: Carrier communication
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SCIENCE AND EDUCATION FILM: Carrier communication
Science
Length: 00:26:14
Date:
Collection
Keywords: Science and Technology | Radio Electronics | Industry In Daqing | Carrier Communication | Beijing Tele Building | 3-Channel Carrier Machine | Medium Coaxial Cable |  1800-Channel Carrier Machine   

This film focuses on Beijing Tele Building, the mechanisms of phones, sound frequency, 3-channel carrier machine, medium coaxial cable and 1800-channel carrier machine.