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  • ASTM C747-2016 用声波共振法测定炭和石墨材料弹性模量与基本频率的方法 Standard Test Method for Moduli of Elas...2023-09-03
  • ETSI TR 138 901/1-2018 5G; Study On Channel Model For Frequencies From 0.5 To 100 Ghz (3Gpp Tr 38.901 Versi...2023-07-31
  • ETSI TR 138 901-2017 5G; Study On Channel Model For Frequencies From 0.5 To 100 Ghz (V14.0.0; 3Gpp Tr 38.90...2023-07-16
  • BS IEC 60404-8-8-2017 Magnetic materials. Specifications for individual materials. Thin electrical steel st...2023-07-05
  • GB/T 10129-2019 电工钢带（片）中频磁性能测量方法 Methods of measurement of magnetic properties of electrical ste...2023-06-05
  • ETSI EN 301 489-3-2013 Electromagnetic Compatibility And Radio Spectrum Matters (Erm); Electromagnetic Comp...2023-05-15
  • EN IEC 60404-6-2018Magnetic materials - Part 6: Methods of measurement of the magnetic properties of magneti...2023-04-22
  • GB/T 15157.7-2002频率低于3MHz的印制板连接器 第7部分;有质量评定的具有通用插合特性的8位固定和自由连接器详细规...2022-06-05
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