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俚语 high frequency (hf)
释义

High Frequency (HF)

Frequencies between 3 MHz and 30 MHz (3 Mega Hertz and 30 Mega Hertz). Used by governments, ships, radio stations and amateur radio operators.
I decided to use the High Frequency (HF) radio last night and try my luck at reaching Japan.
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更新时间:2024/11/10 10:56:46