English Petryanov filters Cited by user Nah pets on 21 Apr 2017 Petryanov filters is a type of filtering cloth that is used for fine and super fine cleaning of air and other gases from fine aerosols.
English Electrospinning Cited by user Materialscientist on 16 May 2013 Electrospinning uses an electrical charge to draw very fine (typically on the micro or nano scale) fibres from a liquid.