GB/T 38926-2020.Technical specification for collection of textile waste. 1范围 GB/T 38926规定了废旧纺织品回收的总体要求、收集、分拣、贮存、运输和环境保护要求。 GB/T 38926适用于废旧纺织品的收集、分拣、运输

GB/T 32288-2020.Electrical steel core for power transformers. 1范围 GB/T 32288规定了电力变压器用电工钢铁心的型号表示方法、技术要求、试验方法、检验规则、标志、包装和运输、贮存。 GB/T 32288适用于电力变压器用电工钢叠铁

GB/T 38921-2020.Specification of steam turbine safety protection system for thermal power plant. 1范围 GB/T 38921规定了火力发电厂汽轮机安全保护系统的功能、性能指标和技术要求。 GB/T 38

GB/T 38901-2020.Fiber reinforced concrete shield segments. 1范围 GB/T 38901规定了用于隧道工程的纤维混凝土盾构管片的符号、分类、形状与规格、标记、原材料、制作工艺、要求.试验方法、检验规则、标志与出厂证明书、贮存和运输。 GB/T

GB/T 38948-2020.Evaluation method for the cracking resistance of asphalt mixture at low temperature. 1范围 GB/T 38948规定了评价沥青混合料低温抗裂性能的试验设备、准备工作、试验步骤、计算、

GB/T 38898-2020.Non-destructive testing-Testing method for measuring coating bond strength using ultrasonic wave. 1范围 GB/T 38898规定了基于超声波原理的涂层结合强度无损检测方

GB/T 38897-2020.Non-destructive testing-Measurement method for material elastic modulus and Poisson's ratio using ultrasoinc velocity. 1范围 GB/T 38897规

GB/T 9771.5-2020.Single-mode optical fibres for telecommunication-Part 5: Characteristics of a non-zero dispersion shifted single-mode optical fibre.

GB/T 9771.3-2020.Single-mode optical fibres for telecommunication-Part 3: Characteristics of an extended wavelength band dispersion unshifted single-m

GB/T 9771.2-2020.Single-mode optical fibres for telecommunication-Part 2: Characteristics of a cut-off wavelength shifted single- mode optical fibre.