prov:value
| - Examples of the powder include fine powders of metals or metal oxides such as aluminum, copper, silver, gold, silicon dioxide typified by Aerosil, titanium dioxide, Shirasu (volcanic ash occurring in the Southern part of Japan) and diatomaceous earth, microspheres of polymers such as a nylon powder, a polyethylene powder, polystyrene beads and acryl beads, and edible powders having a particle diam
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