Unverified80% confidenceDecision RuleTime unknown
尺寸决定用途：15cm细棒亮度弱适合手环/DIY串饰，20-30cm中管适合手持挥舞，粗管(直径≥1.5cm)容量大更亮更持久适合露营和应急标识
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80%
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Long-term
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