• GB/T 39968-2021建筑用通风百叶窗技术要求Technical specification of ventilation louvers for building...2022-03-29
  • ASTM D1822-2021Standard Test Method for Determining the Tensile-Impact Resistance of Plastics2022-03-29
  • BS ISO/IEC 39794-16-2021Information technology. Extensible biometric data interchange formats. Full body ima...2022-03-29
  • ISO 22074-7-2021铁路基础设施 铁轨紧固系统 第7部分:夹紧力和抗拔刚度的试验方法Railway infrastructure — Rail...2022-03-29
  • GB/T 40056-2021中国共产主义青年团团旗颜色标准样品Standard color sample for flag of the Communist Youth Leagu...2022-03-29
  • DIN EN 14730-2-2021Railway applications - Track - Aluminothermic welding of rails - Part 2: Qualification of...2022-03-29
  • BS EN ISO 14245-2021Gas cylinders. Specifications and testing of LPG cylinder valves. Self-closing2022-03-29
  • DIN 13017-2021Graphical symbols for textile machinery2022-03-29
  • ISO 22085-2-2021智能运输系统(ITS) 微移动用移动设备服务平台 第2部分:功能要求和数据集定义Intelligent transp...2022-03-29
  • BS EN ISO 18541-3-2021Road vehicles. Standardized access to automotive repair and maintenance information (R...2022-03-29
  • BS EN 1264-5-2021Water based surface embedded heating and cooling systems. Determination of the thermal outp...2022-03-29
  • ASTM C1859-2021Standard Practice for Determination of Thermal Resistance of Pneumatically Installed Loose-Fi...2022-03-29
  • ASTM D2239-2021Standard Specification for Polyethylene (PE) Plastic Pipe (SIDR-PR) Based on Controlled Insid...2022-03-29
  • DIN EN ISO 13297-2021Small craft - Electrical systems - Alternating and direct current installations (ISO 13...2022-03-29
  • BS EN IEC 60152-2021Designation of phase differences by hour numbers in three-phase AC systems2022-03-29
  • IEC 61300-3-7-2021Fibre optic interconnecting devices and passive components - Basic test and measurement pr...2022-03-29
  • BS EN 50155-2021Railway applications. Rolling stock. Electronic equipment2022-03-29
  • GB/T 40131-2021减速永磁式步进电动机通用规范General specification for reduced-speed permanent-magnet stepping...2022-03-29
  • ASTM C1753/C1753M-2021Standard Practice for Evaluating Early Hydration of Hydraulic Cementitious Mixtures Us...2022-03-29
  • QB/T 5573-2021绿色设计产品评价技术规范 皮革Specification for green-design product assessment. Leather...2022-03-29
  • ISO/IEC TR 24030-2021信息技术 人工智能(AI) 用例Information technology — Artificial intelligence (AI) — U...2022-03-29
  • IEC 62605-2021Multimedia systems and equipment - Multimedia e-publishing and e-books - Interchange format fo...2022-03-29
  • BS ISO/IEC/IEEE 15026-4-2021Systems and software engineering. Systems and software assurance. Assurance in t...2022-03-29
  • DB33/T 2363.6-2021市域(郊)铁路工程质量验收规范 第6部分:电力与牵引供电工程Code for quality acceptance of suburba...2022-03-29