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世界旅游理事会：2021年旅游业对经济的影响报告
ISO 23216 2021 Carbon based films — Determination of optical properties of amorphous carbon films by spectroscopic ellipsometry.pdfISO 1206 2023 Rolling bearings — Needle roller bearings with machined rings — Boundary dimensions, geometrical product specifications (GPS) and tolerance values.pdfISO-IEC 15418 2016 Information technology - Automatic identification and data capture techniques - GS1 Application Identifiers and ASC MH10 Data Identifiers and maintenance.pdfISO 13450 1996 Photography — 110-size cartridge, film and backing paper — Dimensions.pdfISO 10363 1992 Hot-melt adhesives — Determination of thermal stability.pdfISO IEC 14543-4-1 2008 Information technology — Home electronic system (HES) architecture — Part 4-1 Communication layers — Application layer for network enhanced control devices of HES Class 1.pdfISO IEC 8473-2 1996 Information technology — Protocol for providing the connectionless-mode network service — Part 2 Provision of the underlying service by an ISO IEC 8802 subnetwork.pdfISO 4147 1997 Aerospace — Nuts, hexagonal, slotted (castellated), normal height, normal across flats, with MJ threads, classifications.pdfISO 13270 2013 Steel fibres for concrete — Definitions and specifications.pdfISO 32312-11 2024 Aircraft ground support equipment — Specific requirements — Par.pdfGB-T 21816-2008 化学品 固有生物降解性 赞恩-惠伦斯试验.pdfGB-T 23164-2008 地毯抗微生物活性测定.pdfGB-T 44557-2024 制冷系统及热泵 挠性管道元件和非金属管件 要求和分类.pdfGB-T 3723-1999 工业用化学产品采样安全通则.pdfGB-T 19029-2009 质量管理体系咨询师的选择及其服务使用的指南.pdfGB-T 21265-2007 辣椒辣度的感官评价方法.pdfGB-T 36859-2018 饲料中尿素含量的测定.pdfGB-T 8647.9-2006 镍化学分析方法 碳量的测定 高频感应炉燃烧红外吸收法.pdfGB-T 36085-2018 纳米技术 纳米粉体材料测试参考样品研制指南.pdfGB-T 17489-2022 液压传动 颗粒污染分析 从工作系统管路中提取液样.pdf
