专利 一种有色金属管道环缝焊接背部惰性气体保护装置
ISO 197-4 1983 Copper and copper alloys — Terms and definitions — Part 4 Castings.pdf
ISO 20351 2017 Fine ceramics (advanced ceramics advanced technical ceramics) Absolute measurement of internal quantum efficiency of phosphors for white light emitting diodes using an integrating sphe.pdf
ISO_TR 7553-1987Fertilizers. Sampling. Minimum mass of increment to be taken to be representative of.pdf
ISO 23953-1 2023 Refrigerated display cabinets Part 1 Vocabulary.pdf
ISO 17130 2021 Leather — Physical and mechanical tests — Determination of dimensional c.pdf
ISO 11093-9 2019 Paper and board — Testing of cores — Part 9 Determination of flat crush resistance.pdf
ISO 21502 2020 Project, programme and portfolio management — Guidance on project management.pdf
ISO 8094 2013 Steel cord conveyor belts — Adhesion strength test of the cover to the core layer.pdf
ISO-IEC TS 23884 2021 Information technology - Computer graphics image processing and environmental data representation - Material property and parameter representation for model-based haptic simulati.pdf
ISO 17830 2016 Solid biofuels — Particle size distribution of disintegrated pellets.pdf
GB-T 21831-2008 化学品 快速生物降解性 密闭瓶法试验.pdf
GB-T 21762-2008 电缆管理 电缆托盘系统和电缆梯架系统.pdf
GB-T 39279-2020 气体保护电弧焊用热强钢实心焊丝.pdf
GB-T 6104-2005 机动工业车辆 术语.pdf
GB-T 6291-2013 夹扭钳和剪切钳 试验方法.pdf
GB-T 5910-1998 轿车 质量分布.pdf
GB-T 16643-2015 滚动轴承 滚针和推力圆柱滚子组合轴承 外形尺寸.pdf
GB-T 15128-2008 信息技术 开放系统互连 会话服务定义.pdf
GB-T 8152.1-2006 铅精矿化学分析方法 铅量的测定 酸溶解-EDTA滴定法.pdf
GB-T 41768-2022 建筑用绝热材料 有机物含量的测定.pdf