@eternalskeptic2 @obama_I_miss @DrLeanaWen Yes, I do. I also know the physics of how small particles (the respiratory droplets which carry virus) make their way through non-linear paths between layers fibers. That's why even shitty cloth masks are MEASURED to reduce these particles.
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@永久怀疑论者2@obama_I_miss@DrLeanaWen是的，我想。我还知道小颗粒（携带病毒的呼吸液滴）如何通过纤维层之间的非线性路径的物理原理。这就是为什么即使是脏兮兮的布面具也会被测量来减少这些颗粒。
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