SY-T 5040-2012 桩用焊接钢管
ISO 20951 2019 Soil Quality — Guidance on methods for measuring greenhouse gases (CO2, N2O, CH4) and ammonia (NH3) fluxes between soils and the atmosphere.pdf
ISO 23721 2022 Corrosion of metals and alloys — Rating method by appearance of rust and stains of atmospheric corrosion for stainless steels.pdf
ISO 7703 1995 Dried peaches — Specification and test methods.pdf
ISO IEC 27033-4-2014.pdf
ISO 18787 2017 Foodstuffs — Determination of water activity.pdf
ISO 12922 2020 Lubricants industrial oils and related products (class L) Family H (hydraulic systems) Specifications for hydraulic fluids in categories HFAE HFAS HFB HFC HFDR and HFDU.pdf
ISO 19703 2018 Generation and analysis of toxic gases in fire — Calculation of species yields, equivalence ratios and combustion efficiency in experimental fires.pdf
ISO 5264-1 1979 Pulps Laboratory beating Part 1 Valley beater method.pdf
ISO 11631 1998 Measurement of fluid flow — Methods of specifying flowmeter performance.pdf
ISO 16000-37 2019 Indoor air — Part 37 Measurement of PM2,5 mass concentration.pdf
GB-T 40385-2021 钢管无损检测 焊接钢管焊缝缺欠的数字射线检测.pdf
GB-T 8186-2011 挤奶设备 结构与性能.pdf
GB-T 30211-2013 飞机 压力加滑油接头.pdf
GB-T 33155-2016 影像材料 未加工照相胶片和相纸 贮存规范.pdf
GB-T 23129-2008 家用咖啡机性能测试方法.pdf
GB-T 30386-2013 盐水胡椒.pdf
GB-T 17191.1-1997 信息技术 具有1.5Mbit-s 数据传输率的数字存储媒体运动图像及其伴音的编码 第1部分 系统.pdf
GB-T 43146-2023 锥齿轮和准双曲面齿轮几何学.pdf
GB-T 14335-2008 化学纤维 短纤维线密度试验方法.pdf
GB 25433-2010 密闭式炼胶机炼塑机安全要求.pdf