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单词
white alert
释义
WordReference Random House Unabridged Dictionary of American English © 2024
white
′
alert
′
,
Military
(in military or civilian defense) an all-clear signal, directive, etc., indicating that the danger of air raid no longer exists.
Military
a return to normal conditions following an attack or a threat of attack. Cf.
blue alert, red alert, yellow alert.
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directionally
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direction cosine
direction finder
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更新时间:2025/12/19 11:54:13