GB/T 31396.3-2020.Machine tools-Dimensions and geometric tests for self-centring chucks with two-piece jaws一Part 3: Power-operated chucks with serrate

GB/T 5095.2506-2020.Electromechanical components for electronic equipment-Basic testing procedures and measuring methods-Part 25-6:Test 25f: Eye patte

GB/T 38624.1-2020.Internet of things-Gateway-Part 1 : Gateway technology requirements for access of sensing device. 1范围 GB/T 38624的本部分规定了面向感知设备接入的物联网网

GB/T 3103.3-2020.Tolerances for fasteners- Plain washers. 1范围 GB/T 3103的本部分规定了公称直径为1 mm~150 mm、产品等级为A.C和F级、用于与螺栓、螺钉、螺柱和螺母组合连接用平垫圈的公差。 GB/T 3103.3适用于非组

GB/T 38758-2020.Pneumatic fluid power- Rules of non-ferrous metallic cylinder body. 1范围 GB/T 38758规定了由有色金属管制成的气缸缸筒的机械性能、尺寸公差、表面粗糙度和技术要求。 GB/T 38758适用于

GB/T 13908-2020.General requirements for mineral exploration. 1范围 GB/T 13908规定了固体矿产地质勘查(以下简称勘查)的基本原则、勘查目的及勘查阶段、勘查研究内容、勘查工作程度、绿色勘查、勘查工作及其质量、可行性评价、资源储量类

GB/T 1800.2-2020.Geometrical product specifications(GPS)-ISO code system for tolerances on linear sizes-Part 2 : Tables of standard tolerance classes

GB/T 1094.15-2020.Power transformers-Part 15: Gas-filled power transformers. 1范围 GB/T 1094.15规定了充气式电力变压器的术语和定义，使用条件,额定值和一般要求,有一个带分接绕组的变压器的要求,联结和联结组标号,

GB/T 13319-2020.Geometrical product specifications (GPS)-Geometrical tolerancing-Pattern and combined geometrical specification. 1范围 GB/T 13319为使用位置度、

GB/T 4334-2020.Corrosion of metals and alloys-Test methods for intergranular corrosion of austenitic and ferritic austenitic ( duplex) stainless steel

GB/T 25067-2020.Information technology-Security techniques-Requirements for bodies providing audit and certification of information security managemen

GB/T 38733-2020.Office furniture-Office chairs 一Methods for the determination of dimensions. 1范围 GB/T 38733规定了办公椅尺寸的测量方法。 GB/T 38733不包括办公椅尺寸的规定或要求。 2规