GB/T 39745-2021.CNC punching and laser cutting composite machines.1范围GB/T 39745规定了数控冲压激光切割复合机的参数、要求、试验方法、检验规则、标志、...
GB/T 18400.10-2021.Test conditions for machining centres-Part 10: Evaluation of thermal distortions.1范围GB/T 18400的本部分参照ISO 230-3规定了加工中心机床结构和定...
GB/T 1149.6-2021.Internal combustion engines-Piston rings-Part 6 : Scraper rings made of cast iron.1范围GB/T 1149.6规定了活塞环型号为N、NM、E和EM的铸铁刮环的基本...
GB/T 39862-2021.Test method for thermal conductivity of high thermal conductivity ceramics.1范围GB/T 39862规定了高热导率陶瓷材料的导热系数试验方法。GB/T 39862适...
GB/T 39891-2021.Electrical endurance testing for circuit-breakers above a rated voltage of 52 kV.1范围GB/T 39891规定了52kV及以上断路器的电气耐久性试验的总则、测...
GB/T 17421.10-2021.Test code for machine tools- Part 10: Determination of the measuring performance of probing systems of numerically controlled machine tools.1范围GB/T 17421.10规定...
GB/T 5162-2021.Metallic powders-Determination of tap density.1范围GB/T 5162规定了振实密度的测定方法,即粉末在规定条件下在容器中被振实后的密度。2原理...
GB/T 11760-2021.Hulless barley。1范围GB/T 11760规定了青稞的相关术语和定义、质量要求检验方法、检验规则、标签标识、包装、储藏和运输要求。...
GB/T 39898-2021.Technical specifications for the construction of intelligent traffic management system.1范围GB/T 39898规定了智能交通管理系统的组成和技术要求。G...
GB/T 39721-2021.Technical requirement for reference station joining BeiDou ground-based augmentation system.1范围GB/T 39721规定了申请加人北斗地基增强系统的基准站的...
