Diffusion: Very great particles measuring underneath 0.1 micron get bounced about randomly and so are slowed by their interactions with atmospheric atoms and molecules. They ultimately drift or get bounced into a filter fiber, whereupon (once more) they adhere inside of a process referred to as diffusion. มีขนาดกะทัดรัด พกพาไปใช้งานได้อย่างสะดวกในทุกที่ We https://www.mannature.com