During polymer melt extrusion from a circular nozzle. the extrudate at low flow rate shows a stable linear shape with smooth surface but the extrudate at higher flow rate shows unstable shapes with spiral. rosary. or zig-zag structures. https://www.ealisboa.com/super-value-Infinity-Tools-3-Pc-Carbide-Wood-Turning-Tool-Set-super-offer/
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