| http://www.w3.org/ns/prov#value | - The solid carbon material obtained by the method of this invention is very effective to prepare a high grade rubbing material which is used as mechanical seals, brakes of aeroplanes, apex seals, bearings, brushes and the like, and also as various kinds of electrode such as discharging electrode, carbon electrode for fuel cells, electrode for electro-plating, metal-sintering electrode, arc electrod
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