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单词
low frequency
释义
low fre
quency
noun
(In radio) 30-300 kilohertz.
Until recently, submarines relied on long / low-frequency radio waves for communication.
...
Satellite navigation may be degraded for days, and low-frequency radio navigation can be out for hours.
This corresponds to a 2.2-fold difference in current amplitude in the low-frequency range.
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更新时间:2026/4/23 8:06:44