专利 一种便于清理焊渣的PCB板表面清洁装置
ISO 12834 2024 Textiles Synthetic filament yarns Determination of dynamic thermal draw-force of partially oriented yarns (POY).pdf
ISO 15614-7 2016 Specification and qualification of welding procedures for metallic materials — Welding procedure test — Part 7 Overlay welding.pdf
ISO 28198 2018 Vegetable fats and oils — Determination of toluene insoluble matter.pdf
ISO 14026 2017 Environmental labels and declarations — Principles, requirements and guidelines for communication of footprint information.pdf
ISO 8022 1990 Surface active agents — Determination of wetting power by immersion.pdf
ISO 17101-2 2012 Agricultural machinery — Thrown-object test and acceptance criteria — Part 2 Flail mowers.pdf
ISO IEC 17922 2017 Information technology — Security techniques — Telebiometric authentication framework using biometric hardware security module.pdf
ISO 1762 2019 Paper, board, pulps and cellulose nanomaterials — Determination of residue (ash content) on ignition at 525 °C.pdf
ISO 10648-2 1994 Containment enclosures — Part 2 Classification according to leak tightness and associated checking methods.pdf
ISO 11227 2012 Space systems — Test procedure to evaluate spacecraft material ejecta upon hypervelocity impact.pdf
GB-T 626-2006 化学试剂 硝酸.pdf
GB-T 20255.2-2006 硬质合金化学分析方法 钴、铁、锰和镍量的测定 火焰原子吸收光谱法.pdf
GB-T 18688-2023 农业灌溉设备 灌溉阀的压力损失 试验方法.pdf
GB-T 4556-2001 往复式内燃机 防火.pdf
GB-T 15897-1995 化学试剂 碳酸钙.pdf
GB-T 22890-2008 皮革 物理和机械试验 柔软皮革防水性能的测定.pdf
GB-T 32741-2016 肥料和土壤调理剂 分类.pdf
GB-T 34986-2017 产品加速试验方法.pdf
GB-T 19886-2005 声学 隔声罩和隔声间噪声控制指南.pdf
GB-T 17006.8-2003 医用成像部门的评价及例行试验 第2-9部分 稳定性试验 间接透视和间接摄影X射线设备.pdf