GB/T 28267.1-2021.Steel cord conveyor belts-Part1 : Design, dimensions and mechanical requirements for conveyor belts for general use.1范围GB/T 28267的本部分规定了以纵向钢...
GB/T 39820-2021.Cerium bromide scintillator.1范围GB/T 39820规定了溴化铈闪烁体的术语和定义、技术要求、试验方法.检验规则.标志、包装.运输、贮存和...
GB/T 39955-2021.Additive manufacturing-Materials-Powders of Nylon 12 and its composites for powder bed fusion.1范围GB/T 39955规定了粉末床熔融用尼龙12及其复合粉末的...
GB/T 39843-2021.Electronic characteristic measurements-Local critical current density and its distribution in large-area superconducting films.1范围GB/T 39843规定了用三次谐波...
GB/T 39744-2021.General requirements of mechanical product electronic manual based on three-dimensional model.1范围GB/T 39744规定了基于三维模型的机械产品电子手册...
GB/T 39521-2020.Tractors and machinery for agriculture-Auto-guidance systems for operator-controlled tractors and self-propelled machines-Safety requirements.1范围GB/T 39521规定了...
GB/T 39385-2020.Plastics piping and ducting systems-Thermoplastics pipes一Determination of ring flexibility.1范围GB/T 39385规定了环形横截面热塑性塑料管材环柔性的...
GB/T 39309-2020.Rubber hoses and hose assemblies-Wire-or textile-reinforced single-pressure types for hydraulic applications-Specification.1范围GB/T 39309规定了公称内径为5...
GB/T 39313-2020.Rubber hoses and hose assemblies-Compact wire-braid-reinforced hydraulic types for oil-based or water-based fluids-Specification.1范围GB/T 39313规定了五种型别...
GB/T 39248-2020.Thermoplastic multi-layer (non-vulcanized) hoses and hose assemblies for the transfer of hydrocarbons , solvents and chemicals-Specification.1范围GB/T 39248规定了...
