GB/T 39583-2020.Requirement of intelligent technology for energy-saving retrofit of existing buildin...

GB/T 39549-2020.Fiber reinforced thermosetting composites septic tank. 1范围 GB/T 39549规定了纤维增强热固性复合材料化...

GB/T 39531-2020.Terminology of building components and fittings. 1范围 GB/T 39531界定了建筑构配件的术语和定义。 GB/T ...

GB/T 39525-2020.Test method for the fastening degree of glass curtain wall panel. 1范围 GB/T 39525规定了玻...

GB/T 39621-2020.Textiles- Quantitative chemical analysis-Mixture of cross-linked lyocell fibres and ...

GB/T 39577-2020.Technical requirements for access network-10-Gigabit-capable passive optical network...

GB/T 39579-2020.Public telecom network-Technical requirements of smart home application. 1范围 GB/T 39...

GB 51423-2020.Standard for general layout design of ammunition plant. 1总则 1.0.1 为预防事故发生,减少事故损失,保障人民生...

GB/T 39578-2020.Specification for emergency location system based on inertial navigation. 1范围 GB/T 3...

GB/T 39312-2020.Welding procedure qualification test for copper and its alloys. 1范围 GB/T 39312规定了铜及铜...