GB/T 39280-2020.Rods, wires and deposits for tungsten inert gas welding of non alloy and fine grain steels.1范围GB/T 39280规定了钨极惰性气体保护电弧焊用非合金钢及...
GB/T 39238-2020.Non-destructive testing-Ultrasonic testing-Examination for discontinuities perpendicular to the surface.1范围GB/T 39238规定了垂直于表面的不连续的中列式...
GB/T 39239-2020.Non-destructive testing-Ultrasonic testing一Characterization and sizing of discontinuities.1范围GB/T 39239规定了对检测到的不连续进行表征和定量的总...
GB/T 39240-2020.Non-destructive testing-Ultrasonic testing-General principles.1范围GB/T 39240规定了能够传播超声的工业产品超声检测遵循的总则要求。GB/T 392...
GB/T 40045-2021.Fuel specification for hydrogen powered vehicles-Liquid hydrogen(LH2).1范围GB/T 40045规定了氢能汽车用燃料液氢(以下简称液氢)的技术指标、试验...
GB/T 40060-2021.Technical requirements for storage and transportation of liquid hydrogen.1范围GB/T 40060规定了液氢贮存和运输过程中液氢贮罐的设置、罐车和罐式...
GB/T 39881-2021.Examination methods for methaqualone in suspected drugs-Gas chromatography and gas chromatography-mass spectrometry.1范围GB/T 39881规定了安眠酮的气相色谱...
GB/T 40020-2021.Cyber-physical systems-Reference architecture.1范围GB/T 40020规定了信息物理系统参考架构,确定了信息物理系统共同关注点、用户视图和功能...
GB/T 39880-2021.Examination methods for methadone in suspected drugs-Gas chromatography and gas chromatography-mass spectrometry.1范围GB/T 39880规定了美沙酮的气相色谱-质...
GB/T 39882-2021.Examination methods for methylene dioxymetham phetamine in suspected drugs-Gas chromatography and gas chromatography-mass spectrometry.1范围GB/T 39882规定了二亚...
