GB/T 31309-2020.Calculation of electron vacancy number in cast superalloys.1范围GB/T 31309规定了铸造高温合金电子空位数的计算原理、计算步骤、计算方法和结...
GB/T 14513.3-2020.Pneumatic fluid power-Determination of flow-rate characteristics of components using compressible fluids-Part 3 : Method for calculating steady-state flow-rate cha...
GB/T 19204-2020.General characteristics of liquefied natural gas.1范围GB/T 19204给出了液化天然气的一般特性、健康与安全、建造材料。GB/T 19204可做液化天然...
GB/T 38841-2020.Mechanical properties measurement-Room temperature tensile test of reacted Nb3Sn composite superconductors.1范围GB/T 38841规定了反应后的Cu/Nb3Sn复合超导线...
GB/T 27788-2020.Microbeam analysis-Scanning electron microscopy-Guidelines for calibrating image magnification.1范围GB/T 27788规定了使用适当的参考物质对扫描电镜(S...
GB/T 38834.1-2020.Robotics-Performance criteria and related test methods for service robots-Part 1: Locomotion for wheeled robots.1范围GB/T 38834.1描述了规范与评价室内轮式...
GB/T 8454-2020.Reduced ilmenite powder for welding rob-Determination of ferrous iron content-Potassium dichromate titrimetric method.1范围GB/T 8454规定了用重铬酸钾滴定法测...
GB/T 38874.2-2020.Tractors and machinery for agriculture and forestry-Safety-related parts of control systems- Part 2 : Concept phase.1范围GB/T 38874的本部分规定了控制系统...
GB/T 38939-2020.Nickel-based alloy-Determination of multi-element contents-Spark discharge atomic emission spectrometric method( routine method ).1范围GB/T 38939规定了用火花放...
GB/T 24180-2020.Cold-reduced electrolytic chromium/ chromium oxide coated steel sheet and strip.1范围GB/T 24180规定了冷轧电镀铬钢板及钢带的分类和代号、牌号及标...
