hf
英
美
- abbr. 高频（=High Frequency）
详细释义
Noun:
-
a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons
-
3 to 30 megahertz
用法讲解
- cascade hf transmission line 级联高频传输线...
相关词汇
- high frequency 高频
- hafnium [化]铪(金属元素...
【近义词】
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