GB/T 21548-2021.Methods of measurement of the high speed semiconductor lasers directly modulated for optical fiber communication systems. 1范围 GB/T 215

GB 40164-2021.Automobiles and trailer-Specifications and test methods of brake part. 1范围 GB 40164规定了汽车和挂车制动系统用制动衬片、制动蹄片总成、衬块总成、制动鼓和制动盘等制动器换装零部件的术语和定义、

GB/T 9966.15-2021.Test methods for natural stone-Part 15 : Determination of resistance ageing by salt mist. 1范围 GB/T 9966的本部分规定了天然石材耐盐雾老化强度试验的原理、仪器设备、

GB/T 15972.42-2021.Specifications for optical fibre test methods-Part 42: Measurement methods and test procedures for transmission characteristics-Chr

GB/T 39914-2021.Variety genuineness and purity testing of main crops with SSR markers-Maize. 1范围. GB/T 39914规定了玉米(Zea mays L.)品种真实性和品种纯度SSR分子标记的检测原则、检

GB/T 37036.4-2021.Information technology-Biometrics used with mobile devices-Part 4:Iris. 1范围 GB/T 37036.4提出了应用于移动设备虹膜识别的系统构成和业务流程,规定了移动设备上虹膜识别的功能要求、性

GB/T 40025-2021.RF technical requirements and test methods for 24 GHz vehicle radio equipment. 1范围 GB/T 40025规定了工作在24 GHz频段的车辆无线电设备的等效全向辐射功率、发射机杂散发射、接

GB/T 25000.30-2021.Systems and software engineering-Systems and software quality requirements and evaluation( SQuaRE)-Part 30: Quality requirements fr

GB/T 39917-2021.Variety genuineness and purity testing of main crops with SSR markers-Rice. 1范围 GB/T 39917规定了稻(Oryza sativa L.)品种真实性和品种纯度SSR分子标记的检测原则、

GB/T 39990-2021.Particulate-Bioaerosol sampler-Technical specification. 1范围 GB/T 39990规定了生物气溶胶采样器的分类、构成、工作条件、技术要求、试验条件、试验方法、检验规则、标志、包装、运输和贮存。 GB/T 399

GB/T 25000.20-2021.Systems and software engineering-Systems andsoftware quality requirements and evaluation (SQuaRE)-Part 20 : Quality measurement fra

GB/T 39753-2021.General technology requirements for photovoltaic (PV) module recycling and recovery. 1范围 GB/T 39753规定了光伏组件回收再利用的基本原则、收集、运输及贮存、拆解、处置、再生