@SiyuanWang_PhD @joeyfox85 @famulare_mike @RealSexyCyborg I don't understand this concept. If you filter 1 cf of clean air you have zero effective filtration, right?
@SiyuanWang_PhD @joeyfox85 @famulare_mike @RealSexyCyborg 我不明白这个概念。如果您过滤 1 cf 的清洁空气，您的有效过滤效率为零，对吗？