GB/T 12243-2021.Spring loaded safety valves. 1范围 GB/T 12243规定了弹簧直接载荷式安全阀(以下简称安全阀)的设计.性能、试验和检验、外观、标志和铅封.防护和储运。 GB/T 12243适用于整定压力0.1 MPa~ 42.0MPa.流道直径大于

GB/T 39882-2021.Examination methods for methylene dioxymetham phetamine in suspected drugs-Gas chromatography and gas chromatography-mass spectrometry

GB/T 39880-2021.Examination methods for methadone in suspected drugs-Gas chromatography and gas chromatography-mass spectrometry. 1范围 GB/T 39880规定了美沙酮

GB/T 40020-2021.Cyber-physical systems-Reference architecture. 1范围 GB/T 40020规定了信息物理系统参考架构,确定了信息物理系统共同关注点、用户视图和功能视图。 GB/T 40020适用于制造业开展信息物理系统的设计开发、测试验

GB/T 39881-2021.Examination methods for methaqualone in suspected drugs-Gas chromatography and gas chromatography-mass spectrometry. 1范围 GB/T 39881规定了

GB/T 40023-2021.Non-destructive testing instruments-Ultrasonic time-of-flight diffraction instrument-Technical requirements. 1范围 GB/T 40023规定了超声衍射声时检测

GB/T 9966.10-2021.Test methods for natural stone-Part 10 : Determination of resistance to shaking for individual stone anchoragest. 1范围 GB/T 9966的本部分规

GB/T 8151.24-2021.Methods for chemical analysis of zinc concentrates-Part 24 : Determination of soluble zinc content-Flame atomic absorption spectrome

GB/T 11066.11-2021.Methods for chemical analysis of gold-Part 11: Determination of magnesium, chromium, manganese, iron, nickel，copper，palladium, silv

GB/T 25000.1-2021.Systems and software engineering-Systems and software quality requirements and evaluation (SQuaRE)-Part 1: Guide to SQuaRE. 1范围 GB/T

GB/T 40083-2021.Technical requirements for online monitoring of energy consumption of building materials industry. 1范围 GB/T 40083规定了建筑材料行业能耗在线监测的监测边界与

GB/T 40022-2021.General requirements of internet of things based on public telecommunication network. 1范围 GB/T 40022提出了基于公众电信网的物联网总体架构,规定了公众电信网支持物联网应用