[KongchangAI]
Unverified75% confidenceTradeoffTime unknown

防晒涂层与自重的权衡:黑胶/涂银涂层防晒好但增加重量且高温下有异味老化风险;晴雨两用又要轻的,优先选高密度伞面本身高UPF而非厚涂层

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