〖英文學習〗無線電頻率(射頻)

前言:很多人可能跟我一樣,明明某些知識或資訊知道怎麼用中文說,但卻不曉得怎麼用英文說。結果在英文對話時張口結舌、啞口無言搞得自己好像很呆、程度很差似的。所以我把一些中文懂但英文不太會講的資訊筆記下來,除了供自己參考,也分享出來給讀者們瞧瞧。希望這些訊息對你有幫助。

Preface: There are some knowledge or information that I can talk about in Chinese (my first language) but not in English. Therefore, as an English learner, I noted some of them and try to share on my blog. Hope it’s helpful to you, too.

射頻英語:Radio frequency,縮寫為RF),又稱無線電頻率無線射頻高周波,為在3 kHz至300 GHz這個範圍內的震盪頻率。

  • ELF (extremely low frequency):3Hz ~ 30Hz
  • SLF (super low frequency): 30Hz ~ 300Hz
  • ULF (ultra low frequency): 300Hz ~ 3kHz
  • VLF (very low frequency):3 ~ 30kHz
  • LF (low frequency):30 ~ 300kHz; maritime and aeronautical communication, RFID
  • MF (medium frequency):300 ~ 3,000kHz; AM broadcast
  • HF (high frequency): 3~ 30MHz; CB radio
  • VHF (very high frequency): 30 ~ 300MHz; FM broadcast, police radio, VHF TV
  • UHF (ultra high frequency):300 ~ 3,000MHz; radar and UHF TV
  • SHF (super high frequency): 3 ~ 30GHz; satellite communication
  • EHF (extremely high frequency): 30 ~ 300GHz; experimental and amateur radio

 

中文版

  • 極低頻 (ELF):3~30赫茲
  • 超低頻 (SLF):30~300赫茲
  • 特低頻 (ULF) : 300赫茲~3千赫
  • 甚低頻(VLF):3~30千赫
  • 低頻(LF):30~300千赫;海軍與航空通訊、RFID
  • 中頻(MF):300~3000千赫;AM調幅廣播
  • 高頻(HF):3~30百萬赫;民用廣播
  • 甚高頻(VHF):30~300百萬赫;FM廣播、無線電視、美國警用無線電
  • 特高頻(UHF):300~3000百萬赫;UHF電視、手機通信
  • 超高頻(SHF):3~30吉赫;衛星通信
  • 極高頻(EHF):30~300吉赫;實驗用或火腿電台

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