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@teemo1209 @KenWong_ @shydow 任何口罩都防不住病毒。病毒是纳米级的,口罩防护是微米级。但病毒自己不会移动,他必须依赖飞沫移动,口罩防护的是飞沫,飞沫被棉吸住。但同时,人呼气出去含水蒸气,这样会湿润口罩,如果湿润的部分和飞沫接触,口罩就必须丢掉,但人不可能这么精准,要留有冗余,就假设6个小时人呼气会湿润口罩。 twitter.com/mydream2025/status

t.me/private_channel_c14370a/3

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