prov:value
| - The abrasive particles may comprise a material, such as a-alumina, silicon carbide, chromium oxide, cerium oxide, non-magnetic iron oxide, diamond, ??-alumina, ??.??-alumina, fused alumina, corundum, artificial diamond, garnet, emery (principally comprising corundum and magnetite), silica, silicon nitride, boron nitride, molybdenum carbide, boron carbide, tungsten carbide and titanium carbide.
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