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单词
medium frequency
释义
medium frequency
n.
(名词)
abbr.
mf
【缩写】
A radio frequency or radio-frequency band in the range 300 to 3,000 kilohertz.
中频:介于300兆赫与3,000兆赫之间的无线频率或无线电频带
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更新时间:2026/3/22 20:38:19