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IEC 61189-2-721:2015 EN-FR
Test methods for electrical materials, printed boards and other interconnection structures and assemblies - Part 2-721: Test methods for materials for interconnection structures - Measurement of relative permittivity and loss tangent for copper clad laminate at microwave frequency using a split post dielectric resonator
现行
发布日期 :
1970-01-01
实施日期 :