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单词 sky wave
释义

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sky wave
sky wave n. Radio a radio wave reflected back towards the earth's surface by the ionosphere; cf. ground wave n. at ground n. Compounds 2a.Sky waves can be used to transmit radio signals beyond the horizon and are typically used for long wave transmissions.
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space wave1899
surface wave1913
CW1920
beam1924
sky wave1924
ground wave1927
tweek1933
1924 Washington Post 5 Jan. (Sports section) 4/1 ‘Ground Wires and Sky Waves,’ one of the ‘Highlights of Modern Radio Broadcasting,’ by Dr. Alfred N. Goldsmith, director of research of the Radio Corporation of America.
1944 Proc. IRE 32 668/1 Design of directional antennas for broadcast stations to prevent skywave interference to another station.
2008 J. A. Richards Radio Wave Propagation iii. 38 Compute the range at which the sky wave will have about the same field strength as the surface wave.
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更新时间:2025/1/24 13:05:24