GB/T 39992-2021.Sensory analysis-Methodology-Balanced incomplete block designs. 1范围 GB/T 39992规定了在感官描述分析和喜好测试中应用平衡不完全区组设计的方法。 GB/T 39992适用于被测试样品数超过在一个

GB/T 33351.2-2021.Determination of arsenic , beryllium, antimony in electrical and electronic products-Part 2: Inductively coupled plasma optical emis

GB/T 39884-2021.Examination methods for three components in cannabis in suspected drugs- Gas chromatography and gas chromatography-mass spectrometry.

GB/T 9966.17-2021.Test methods for natural stone-Part 17 : Determination of resistance to salt crystallization. 1范围 GB/T 9966的本部分规定了测定天然石材盐结晶强度的原理、仪器设

GB/T 40054-2021.Societal security-Emergency management-Guidelines for public warning. 1范围 GB/T 40054提供了在突发事件发生的事前、事中和事后,公共预警的构建、管理和实施的指南。 GB/T 40054适用

GB/T 9966.16-2021.Test methods for natural stone-Part 16:Determination of linear thermal expansion coefficient. 1范围 GB/T 9966的本部分规定了天然石材线性热膨胀系数试验的原理、仪

GB/T 39782-2021.Specifications for safe firing area map-drawing of anti-aircraft gun at weather modification operating spots. 1范围 GB/T 39782规定了人工影响天气高

GB 8999-2021.General regulation of quality assurance for ionizing radiation monitoring. 1适用范围 GB 8999规定了电离辐射(以下简称辐射)监测质量保证的通用要求。 GB 8999适用于为辐射防护和放射性污染

GB/T 39994-2021.Determination of six metal elements (iron, calcium, magnesium,zinc，titanium, copper) in polyolefin pipe system. 1范围 GB/T 39994规定了聚烯烃管道

GB/T 40044-2021.Specification of warehouse distribution information exchange in express service manufacturing industry. 1范围 GB/T 40044规定了快递服务组织与制造企业在仓