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

GB/T 13297-2021.General rules of packaging , marking and quality certification for precision alloys. 1范围 GB/T 13297规定了精密合金的包装、标志贮存和质量证明书的一般要求。 GB/T 13

GB/T 39997-2021.Thermoplastic pipework for underground installation at petrol filling stations. 1范围 GB/T 39997规定了加油站埋地用热塑性塑料复合管道系统的术语和定义、材料、分类、工作压力及寿命