| http://www.w3.org/ns/prov#value | - The fluorine-containing elastomer composition according to claim 1, wherein the terpolymer is a polymer obtained by polymerizing tetrafluoroethylene and perfluoro(methyl vinyl ether) with about 0.1 to about 5% by mole of perfluoro(??-cyanoalkyl vinyl ether) as a cross-linking site monomer, wherein the polymerization of the terpolymer is carried out under a condition that a mole ratio of tetrafluor
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