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extra high frequency; ultrahigh frequency (电磁波辐射频率为300〜3 000 MHz,或波长100〜10 cm。特高频主要被军方用于空对空和空对地的视线基础上语言通信。在一些情况下,频率最低可达到 225MHz,且仍被认为是特高频,UHF 波段也用于仪表着陆系统 (ILS )的下滑信标以及国际上 1000MHz 的测距设备 (DME)。二次监视雷达也工作在 UHF 波段,其模式工作在1 030 MHz,代码工作在 1090 MHz) | |||
ultrahigh frequency | |||
centimetre wave | |||
superhigh frequency | |||
ultrahigh frequency | |||
super-frequency; super-high frequency; ultra-high frequency | |||
ultra high frequency; VHF (Very High Frequency) | |||
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super high frequency | |||
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extremely high frequency | |||
extra high frequency | |||
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ultra high frequency | |||
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UHF band (300兆赫~ 3000兆赫) | |||
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ultra high frequency |
特高频 : 68 phrases in 12 subjects |
Air defense | 12 |
Aviation | 4 |
Computers | 1 |
Construction | 3 |
Electric machinery | 1 |
Electronics | 9 |
General | 5 |
Metallurgy | 2 |
Shipbuilding | 1 |
Space | 2 |
Technology | 25 |
Telecommunications | 3 |