@GainOfDystopia @LazarusLong13 @SteverRobbins I don't know if it is the same paper. There is one that shows measurements for MERV filters. They're all low enough that you're relying on multiple passes.
@GainOfDystopia @LazarusLong13 @SteverRobbins 我不知道是不是同一张纸。有一个显示 MERV 过滤器的测量值。它们都足够低，以至于您依赖于多次通过。