专利 一种智慧教室可视化管理软件平台
ISO 19475 2021 Document management — Minimum requirements for the storage of docu.pdf
ISO 1513 2010 Paints and varnishes — Examination and preparation of test samples.pdf
ISO 10478 1994 Petroleum products — Determination of aluminium and silicon in fuel oils — Inductively coupled plasma emission and atomic absorption spectroscopy methods.pdf
ISO 18632 2018 Alloyed steels Determination of manganese Potentiometric or visual titration method.pdf
BS ISO IEC 29158-2025.pdf
ISO 13363 2016 Rubber and plastics hoses for marine-engine wet-exhaust systems — Specification.pdf
ISO-TS 16774-1 2024 Test methods for repair materials for water-leakage cracks in underground concrete structures Part 1 Test method for thermal stability.pdf
ISO IEC 5394 2024 Information technology — Criteria for concept systems.pdf
ISO 104 2015 Rolling bearings — Thrust bearings — Boundary dimensions, general plan.pdf
ISO TS 23362 2021 Nanotechnologies — Nanostructured porous alumina as catalyst support for vehicle exhaust emission control — Specification of characteristics and measurement methods.pdf
GB-T 9264-2012 色漆和清漆 抗流挂性评定.pdf
GB-T 1804-2000 一般公差 未注公差的线性和角度尺寸的公差.pdf
GB-T 7700-2005 16mm电影放映机片轴 尺寸.pdf
GB-T 21458-2008 流动式起重机 额定起重量图表.pdf
GB-T 2821-2003 齿轮几何要素代号.pdf
GB-T 18776-2002 公差尺寸 英寸和毫米的互换算.pdf
GB-T 25976-2010 船舶和海上技术 救生设备示位灯 产品的试验、检查和标志.pdf
GB-T 18128-2000 应用错误与确认报文.pdf
GB-T 18049-2017 热环境的人类工效学 通过计算PMV和PPD指数与局部热舒适准则对热舒适进行分析测定与解释.pdf
GB-T 14043-2005 液压传动 阀安装面和插装阀阀孔的标识代号.pdf