| http://www.w3.org/ns/prov#value | - The hollow carbon microfibers used in the present invention as conductive fibers are extremely fine, hollow carbon fibers obtained by the vapor phase deposition method (a method in which a carbon-containing gas such as CO or a hydrocarbon is catalytically pyrolyzed in the presence of a transition metal-containing particles whereby the carbon formed by pyrolysis grows on the particles as starting p
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