Unverified75% confidenceFactTime unknown
红光频闪比白光更省电且夜间对救援直升机/搜救人员更醒目、不易与民用灯光混淆,作为求救信号红光可见性优于同流明白光
1
Sources
75%
Confidence
Long-term
Relevance
-
First Seen
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