Unverified50% confidenceFactTime unknown
冲锋衣防水靠两层：面料DWR拒水涂层（表面荷叶效应）+防水膜（内部阻水）。DWR是消耗品，失效后面料会‘湿透吸水’虽不漏但闷重，需定期用免洗喷剂或烘干激活恢复
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