GB/T 39961-2021.Ball screw assembly-Dimension of shaft-end type screw. 1范围 GB/T 39961规定了公称直径16 mm~100 mm.负荷滚珠圈数不大于5圈的滚珠丝杠副支承结构型式和尺寸。 GB/T 39961适用于机床及其

GB/T 34079.5-2021.Service specification of electronic government common platform based on cloud computing- Part 5 : Mobility service. 1范围 GB/T 34079的本

GB/T 34079.2-2021.Service specification of electronic government common platform based on cloud computing一Part 2: Application deployment and data migr

GB/T 20385.1-2021.Textiles-Determination of organotin compounds-Part 1 : Derivatisation method using GC-MS. 1范围 GB/T 20385.1规定了采用衍生化气相色谱-质谱法(GC-MS)测定纺

GB/T 39752-2021.Safety requirements and test specifications of electric vehicle conductive supply equipment. 1范围 GB/T 39752规定了电动汽车供电设备(以下简称“供电设备”)的安全要

GB/T 12817-2021.General technical specification for railway passenger car. 1范围 GB/T 12817规定了标准轨距铁路客车的术语和定义、基本要求、材料要求、各部结构与性能、涂装、标志、检验方法与检验规则。 GB/T 128

GB/T 39786-2021.Information security technology-Baseline for information system cryptography application. 1范围 GB/T 39786规定了信息系统第一级到第四级的密码应用的基本要求,从信息系统

GB/T 17901.3-2021.Information technology-Security techniques-Key management-Part 3 :Mechanisms using asymmetric techniques. 1范围 GB/T 17901的本部分定义了基于非对称

GB/T 39830-2021.Code for seismic design of steel static storage systems. 1范围 GB/T 39830规定了地震作用下立体仓库钢结构货架的设计规范,其内容包括一般规定、抗震设计流程、地震作用及结构抗震计算、分析方法及构造要求。

GB/T 39831-2021.Hydraulic fluid power- Four-port modular stack valves and four-port directional control valves, sizes 02，03，05，07, 08 and 10-Clamping

GB/T 12736-2021.Conveyor belts一Determination of strength of mechanical fastenings-Static test method. 1范围 GB/T 12736规定了输送带机械接头强度的静态试验方法。该接头可以使用连接轴杆连接，

GB/T 39741.2-2021.Plain bearings-Tolerances-Part 2 :Tolerances on geometrical characteristics and surface roughness for shafts and thrust collars. 1范围