| http://www.w3.org/ns/prov#value | - 20150030457IMPELLER MANUFACTURING METHOD AND IMPELLER - An impeller is manufactured by forming, by molding, a first part including a base having a first annular surface with an annular shape in plan view, forming, by molding, a second part including a shroud having a second annular surface with an annular shape having an inner diameter larger than that of the first annular surface in bottom view,
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