Diffusion: Really Good particles measuring below 0.one micron get bounced all over randomly and so are slowed by their interactions with atmospheric atoms and molecules. They sooner or later drift or get bounced right into a filter fiber, whereupon (once more) they stick in a system termed diffusion. กิจกรรมเพื่อสาธารณะประโยชน์ของบริษัท ช่วยฆ่าเชื้อโรค waiting for link from Social Network Posts (13)