专利 一种资源推送方法、装置、设备和存储介质
ISO 17257 2020 Rubber — Identification of polymers — Pyrolytic gas-chromatographic method using mass-spectrometric detection.pdf
ISO 9241-333 2017 Ergonomics of human-system interaction — Part 333 Stereoscopic displays using glasses.pdf
ISO 22197-4 2021 Fine ceramics (advanced ceramics advanced technical ceramics) Test method for air-purification performance of semiconducting photocatalytic materials Part 4 Removal of formaldehyde..pdf
GB-T 13288.1-2008 涂覆涂料前钢材表面处理 喷射清理后的钢材表面粗糙度特性 第1部分 用于评定喷射清理后钢材表面粗糙度的ISO表面粗糙度比较样块的技术要求和定义.pdf
ISO 8405 2023 Tools for moulding — Ejector sleeves with cylindrical head — Basic series f.pdf
ISO 28961 2012 Acoustics Statistical distribution of hearing thresholds of otologically normal persons in the age range from 18 years to 25 years under free-field listening conditions.pdf
ISO 10425 2023 Steel wire ropes for the petroleum and natural gas industries — M.pdf
ISO TS 10689 2023 Nanotechnologies — Superhydrophobic surfaces and coatings.pdf
ISO 24518 2015 Activities relating to drinking water and wastewater services Crisis management of water utilities.pdf
ISO 10952 2021 Glass-reinforced thermosetting plastics (GRP) pipes and fittings Determination of the resistance to chemical attack for the inside of a section in a deflected condition.pdf
GB-T 22554-2010 基于标准样品的线性校准.pdf
GB-T 11321-1989 波导元件模数尺寸选择指南.pdf
GB-T 9443-2019 铸钢铸铁件 渗透检测.pdf
GB-T 20521-2006 半导体器件 第14-1部分 半导体传感器-总则和分类.pdf
GB-T 8335-2011 气瓶专用螺纹.pdf
GB-T 43595-2023 水轮机、水泵水轮机和蓄能泵启动试验及试运行导则.pdf
GB-T 5524-2008 动植物油脂 扦样.pdf
GB-T 18608-2012 原油和渣油中镍、钒、铁、钠含量的测定 火焰原子吸收光谱法.pdf
GB-T 21485-2008 船舶和海上技术 船上消防、救生设备及逃生路线布置图.pdf
GB-T 28386-2012 印刷、纸加工、造纸机械和辅助设备的噪声测量方法 准确度等级2和3.pdf