| http://www.w3.org/ns/prov#value | - For avoiding this, an electrode material wherein a base material such as titanium or the like is covered with platinum metallic oxide such as iridium oxide, ruthenium oxide or the like, or a porous electrode material wherein a base material such as porous material used generally as infusible metal electrode or titanium is covered with platinum metal through plating or the like can be provided to b
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