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单词
cone-of-silence marker
释义
cone-of-silence marker
cone-of-silence marker
[
¦kōn əv ′sī·ləns ‚märk·ər
]
(navigation)
A marker beacon, usually a Z (for zone) marker beacon, located at a radio-range station; operates at 75 megahertz and produces a light signal accompanied by a 3000-hertz tone.
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更新时间:2025/2/27 20:41:29