专利 一种基于运营商大数据的门禁考勤方法及系统
ISO 4825-1 2023 Fine ceramics (advanced ceramics advanced technical ceramics) --Test method for thermal property measurements of metalized ceramic substrates Part 1 Evaluation of thermal resistance f.pdf
ISO 20029-2 2017 Plastics Thermoplastic polyester-ester and polyether-ester elastomers for moulding and extrusion Part 2 Preparation of test specimens and determination of properties.pdf
ISO IEC 7942-1 1994 Information technology — Computer graphics and image processing — Graphical Kernel System (GKS) — Part 1 Functional description.pdf
ISO 16900-3 2012 Respiratory protective devices Methods of test and test equipment Part 3 Determination of particle filter penetration.pdf
ISO 18674-5 2019 Geotechnical investigation and testing Geotechnical monitoring by field instrumentation Part 5 Stress change measurements by total pressure cells (TPC).pdf
ISO 9876 2015 Ships and marine technology — Marine facsimile receivers for meteorological charts.pdf
ISO 105-B05 1993 Textiles — Tests for colour fastness — Part B05 Detection and assessment of photochromism.pdf
ISO 6507-1 2023 Metallic materials — Vickers hardness test — Part 1 Test method.pdf
ISO TR 13587 2012 Three statistical approaches for the assessment and interpretation of measurement uncertainty.pdf
ISO 10307-1 2009 Petroleum products — Total sediment in residual fuel oils — Part 1 Determination by hot filtration.pdf
GB-T 2007.7-1987 散装矿产品取样、制样通则 粒度测定方法 手工筛分法.pdf
GB-T 33315-2016 塑料 酚醛树脂 凝胶时间的测定.pdf
GB-T 19739-2005 机械振动与冲击 手臂振动 手臂系统为负载时弹性材料振动传递率的测量方法.pdf
GB-T 15531-2008 带传动 带轮 中心距调整极限值.pdf
GB-T 2423.53-2005 电工电子产品环境试验 第2部分 试验方法 试验Xb 由手的磨擦造成标记和印刷文字的磨损.pdf
GB-T 7514-1987 信息处理交换用七位编码字符集与电报用五单位电码之间的转换.pdf
GB-T 6609.23-2004 氧化铝化学分析方法和物理性能测定方法 试样的制备和贮存.pdf
GB-T 38161-2019 钯合金首饰 钯含量的测定 钇内标ICP光谱法.pdf
GB-T 1663-2001 增塑剂结晶点的测定.pdf
GB-T 24743-2009 技术产品文件 钢铁零件热处理表示法.pdf