GB/T 20975.14-2020.Methods for chemical analysis of aluminium and aluminium alloys-Part 14:Determination of nickel content. 1范围 GB/T 20975的本部分规定了丁二酮肟分

GB/T 20975.25-2020.Methods for chemical analysis of aluminium and aluminium alloys-Part 25: Determination of elements content-Inductively coupled plas

GB/T 6730.82-2020.Iron ores-Determination of barium content-EDTA titrimetric method. 1范围 GB/T 6730的本部分规定了EDTA滴定法测定铁矿石中钡含量。 GB/T 6730.82适用于天然铁矿石、铁精矿和块矿

GB/T 20975.22-2020.Methods for chemical analysis of aluminium and aluminium alloys-Part 22 : Determination of beryllium content. 1范围 GB/T 20975的本部分规定了

GB/T 20975.35-2020.Methods for chemical analysis of aluminium and aluminium alloys-Part 35: Determination of tungsten content-Thiocyanate spectrophoto

GB/T 20975.12-2020.Methods for chemical analysis of aluminium and aluminium alloys一Part 12 : Determination of titanium content. 1范围 GB/T 20975的本部分规定了二

GB/T 20975.9-2020.Methods for chemical analysis of aluminium and aluminium alloys-Part 9: Determination of lithium content-Flame atomic absorption spe

GB/T 20975.4-2020.Methods for chemical analysis of aluminium and aluminium alloys-Part 4: Determination of iron content. 1范围 GB/T 20975的本部分规定了邻二氮杂菲分光光

GB/T 20975.3-2020.Methods for chemical analysis of aluminium and aluminium alloys-Part 3 :Determination of copper content. 1范围 GB/T 20975的本部分规定了新亚铜灵分光

GB/T 26367-2020.Hygienic requirements for biguanides disinfectants. 1范围 GB/T 26367规定了胍类消毒剂的原料要求、技术要求、应用范围、使用方法、运输、贮存和包装、标识要求、检验方法。 GB/T 26367适用于以氯己定、聚

GB/T 38829-2020.Technical requirements for IPTV media delivery system-Content access. 1范围 GB/T 38829规定了IPTV媒体交付系统的内容接入接口、内容接人通信流程和内容接人通信协议以及内容管理文件等内容接

GB/T 20975.18-2020.Methods for chemical analysis of aluminium and aluminium alloys-Part 18 : Determination of chromium content. 1范围 GB/T 20975的本部分规定了萃