GB/T 17475-2020 重烃类混合物蒸馏试验 真空釜式蒸馏法
GB/T 17475-2020.Standard test method for distillation of heavy hydrocarbon mixtu...
国家标准2023.07.28
GB/T 17475-2020.Standard test method for distillation of heavy hydrocarbon mixtu...
国家标准2023.07.28
GB/T 38663-2020.Identification system for internet of things-Middleware standard...
国家标准2023.07.28
GB/T 38660-2020.Identification system for internet of things-Security mechanism...
国家标准2023.07.28
GB/T 38662-2020.Identification system for internet of things-Guideline for Ecode...
国家标准2023.07.28
GB/T 38709-2020.Specification for international freight forwarding railway trans...
国家标准2023.07.28
GB/T 38708-2020.Risk control and prevention of international trade cargo deliver...
国家标准2023.07.28
GB/T 38703-2020.Requirements for international road transport services of freigh...
国家标准2023.07.28
GB/T 38717-2020.Terminology of amphibious aircraft.1范围GB/T 38717界定了水陆两栖飞机术语,包括分类...
国家标准2023.07.28
GB/T 23127-2020.Electric appliances connected to the water mains-Avoidance of ba...
国家标准2023.07.28
GB/T 38698.1-2020.Recycling of traction battery used in electric vehicle 一Manage...
国家标准2023.07.28