HF
abbr.
高頻（=High Frequency）
英語翻譯 Noun:
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a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons
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3 to 30 megahertz
造句
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cascade hf transmission line
級聯高頻傳輸線...
近義反義詞 【近義詞】
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high frequency
高頻
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hafnium
[化]鉿(金屬元素...
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