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  • EN 16727-1-2018Railway applications. Track. Noise barriers and related devices acting on airborne sound prop...2023-04-18
  • DIN EN 17023-2019Railway applications - Railway vehicle maintenance - Creation and modification of maintenan...2023-04-18
  • GB/T 40694.4-2022信息技术 用于生物特征识别系统的图示、图标和符号 第4部分:指纹应用Information technology-Picto...2023-04-17
  • ASTM B360-2020Standard Specification for Hard-Drawn Copper Capillary Tube for Restrictor Applications2023-04-17
  • GB/T 41077-2021建筑用绝热制品 六溴环十二烷的限值Thermal insulating products for building applications. Limit...2022-10-24
  • GB/T 41037-2021宇航用系统级封装(SiP)保证要求Assurance requirements for system in package for space applicati...2022-10-25
  • GB/T 41036-2021宇航用超高低温圆形电连接器通用规范General specification for super high-low temperature circul...2022-10-25
  • GB/T 21414-2021轨道交通 机车车辆 电气隐患防护的规定Railway applications—Rolling stock—Protective provision...2022-10-25
  • GB/T 37863.2-2021轨道交通 牵引电传动系统 第2部分:机车、动车组Railway applications. Traction electric drive s...2022-10-25
  • GB/T 41032-2021宇航用元器件结构分析通用指南General guidelines for construction analysis components for space...2022-10-25
  • GB/T 41041-2021宇航禁限用元器件控制要求Control requirements of forbidden and restricted components for space...2022-10-25
  • GB/T 21413.2-2021轨道交通 机车车辆电气设备 第2部分:电工器件 通用规则Railway applications. Electric equipment...2022-10-25
  • GB/T 25119-2021轨道交通 机车车辆电子装置Railway applications. Electronic equipment used on rolling stock...2022-10-26
  • GB/T 18494.2-2022变流变压器 第2部分:高压直流输电用换流变压器Convertor transformers—Part 2: Transformers for...2022-10-26
  • GB/T 19749.3-2022耦合电容器及电容分压器 第3部分:用于谐波滤波器的交流或直流耦合电容器Coupling capacitors and ...2022-10-26
  • GB/T 18998.5-2022工业用氯化聚氯乙烯(PVC-C)管道系统 第5部分:系统适用性Chlorinated poly(vinyl chloride)(PVC-C)piping...2022-10-26
  • GB/T 18998.1-2022工业用氯化聚氯乙烯(PVC-C)管道系统 第1部分:总则Chlorinated poly(vinyl chloride)(PVC-C)piping system...2022-10-27
  • GB/T 18998.2-2022工业用氯化聚氯乙烯(PVC-C)管道系统 第2部分:管材Chlorinated poly(vinyl chloride)(PVC-C)piping system...2022-10-27
  • GB/T 18998.3-2022工业用氯化聚氯乙烯(PVC-C)管道系统 第3部分:管件Chlorinated poly(vinyl chloride)(PVC-C)piping syste...2022-10-27
  • GB/T 25343.5-2010轨道交通.轨道车辆及其零部件的焊接 第5部分:检验、试验及文件Railway applications—Welding of ...2022-06-16
  • GB/T 25082-2010800kV直流输电用油浸式换流变压器技术参数和要求Specification and technical requirements of oil-...2022-06-14
  • GB/T 28573-2012石油、石化和天然气工业.一般用途汽轮机Petroleum,petrochemical and natural gas industries steam...2022-06-14
  • GB/T 18730-2002文献成像应用在35mm胶片上缩微拍摄非彩色地图Document imaging applications--Microfilming of achr...2022-06-13
  • GB/T 3452.3-2005液压气动用0形橡胶密封圈 沟槽尺寸Housing dimensions for O-ring elastomer seals in hydraulic ...2022-06-13
  • SJ/T 11306-2005有质量评定的直流和低频模拟及数字式高速数据处理设备用连接器.第4部分:印制板连接器分规范Connecto...2022-06-09