GB/T 39955-2021 增材制造 材料 粉末床熔融用尼龙12及其复合粉末
GB/T 39955-2021.Additive manufacturing-Materials-Powders of Nylon 12 and its com...
国家标准2023.08.06
GB/T 39955-2021.Additive manufacturing-Materials-Powders of Nylon 12 and its com...
国家标准2023.08.06
GB/T 8110-2020.Wire electrodes and weld deposits for gas shielded metal arc weld...
国家标准2023.08.06
GB/T 39824-2021.Determination of relative strength of dyes in solution.1范围GB/T 3...
国家标准2023.08.06
GB/T 12787-2020.Radiation protection instrumentation-Warning equipment for criti...
国家标准2023.08.06
GB/T 39794.1-2021.Test method for wind uplift resistance of metal roof-Part 1: S...
国家标准2023.08.06
GB/T 39806-2021.Safety performance evaluation of suspended floor,stairs, trail a...
国家标准2023.08.06
GB/T 39798-2021.Test methods for optical properties of glass used on multiple un...
国家标准2023.08.06
GB/T 39797-2021.Test method for surface tension of glass melt-Sessile drop metho...
国家标准2023.08.06
GB/T 39796-2021.Test method for airbone sound insulating properties of glass use...
国家标准2023.08.06
GB/T 39749-2021.Evaluation method and graduation for energy efficiency performan...
国家标准2023.08.06