腾讯研究院 中小企业数字化转型发展报告 2022
ISO 834-12 2012 Fire resistance tests — Elements of building construction — Part 12 Specific requirements for separating elements evaluated on less than full scale.pdf
ISO TS 80004-8 2020 Nanotechnologies — Vocabulary — Part 8 Nanomanufacturing.pdf
ISO 965-5 1998 ISO general purpose metric screw threads — Tolerances — Part 5 Lim.pdf
ISO 4185 1980 Measurement of liquid flow in closed conduits — Weighing method.pdf
ISO 13105-2 2023 Building construction machinery and equipment — Machinery for concrete.pdf
ISO 26021-3 2022 Road vehicles — End-of-life activation of in-vehicle pyrotechnic devices — Part 3 Data definitions.pdf
ISO 14245 2021 Gas cylinders — Specifications and testing of LPG cylinder valves — Self-closi.pdf
ISO 21940-12 2016 Mechanical vibration — Rotor balancing — Part 12 Procedures and tolerances for rotors with flexible behaviour.pdf
ISO 11877 2008 Hardmetals Determination of silicon in cobalt metal powders Photometric method.pdf
ISO 3262-21 2023 Extenders — Specifications and methods of test — Part 21 Silica sand (unground natural quartz).pdf
GB-T 38184-2019 道路车辆 火花塞热值分级及其测定方法.pdf
GB-T 3668.2-1983 组合机床通用部件 支架尺寸.pdf
GB-Z 18039.6-2005 电磁兼容 环境 各种环境中的低频磁场.pdf
GB-T 15212-1994 广播及类似声系统用连接器的应用.pdf
GB-T 18449.4-2022 金属材料 努氏硬度试验 第4部分 硬度值表.pdf
GB-T 8626-2007 建筑材料可燃性试验方法.pdf
GB-T 19244-2003 信息技术 高性能串行总线.pdf
GB-T 21471-2008 锤上钢质自由锻件机械加工余量与公差 轴类.pdf
GB-T 6847-2012 影像材料 照相胶片和相纸 卷曲度的测定.pdf
GB-T 10567.1-1997 铜及铜合金加工材残余应力检验方法 硝酸亚汞试验方法.pdf