GB/T 38920-2020.Coding requirements for dispatch unit of hazardous waste.1范围GB/T...

国家标准2023.07.30

GB/T 38922-2020.General specification for 35 kV and below voltage standardized p...

国家标准2023.07.30

GB/T 38953-2020.Technical requirements for relay protection of microgrid.1范围GB/T...

国家标准2023.07.30

GB/T 38816-2020.Agate-Beihong agate-Testing.1范围GB/T 38816规定了北红玛瑙的鉴定特征及鉴定方法。GB/T...

国家标准2023.07.30

GB/T 38878-2020.System tests for the projects of high-voltage direct current (HV...

国家标准2023.07.30

GB/T 38821-2020.Hetian Yu-Testing and classification.1范围GB/T 38821规定了和田玉的术语和定义、鉴...

国家标准2023.07.30

GB/T 8704.6-2020.Ferrovanadium-Determination of silicon content-The sulfuric aci...

国家标准2023.07.30

GB/T 8704.5-2020.Ferrovanadium-Determination of vanadium content-The ammonium fe...

国家标准2023.07.30

GB/T 8704.10-2020.Ferrovanadium-Determination of silicon,manganese,phosphorus,al...

国家标准2023.07.30

GB/T 6730.81-2020.Iron ores-Determination of multiple trace elements-Inductively...

国家标准2023.07.30