EN ISO 15720-2001 en Metallic Coatings - Porosity Tests - Porosity in Gold or Palladium Coatings on Metal Substrates by Gel-Bulk Electrography《金属涂层 孔隙率试验 胶材料电版术法测定金属衬底上金和钯涂层孔隙度 ISO.pdf

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