
Aerials for the receptio of sound and television broadcasting in the frequency range 30 MHz to 1GHz Part 1:Electrical and mechanical charateristics
标准号:SJ/Z 9097.1-1987
Aerials for the receptio of sound and television broadcasting in the frequency range 30 MHz to 1GHz Part 1:Electrical and mechanical charateristics
标准号:SJ/Z 9097.1-1987