ISO IEC 10165-6 1997 Information technology — Open Systems Interconnection — Structure of management information Requirements and guidelines for implementation conformance statement
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ISO 18276 2017 Welding consumables — Tubular cored electrodes for gas-shielded and non-gas-shielded metal arc welding of high strength steels — Classification.pdf
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ISO 18869 2017 Hydraulic fluid power Test methods for couplings actuated with or without tools.pdf
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GB-T 6366-2012 表面活性剂 无机硫酸盐含量的测定 滴定法.pdf
GB-T 3668.4-1983 组合机床通用部件 滑台尺寸.pdf
GB-T 23696-2017 证券及相关金融工具 交易所和市场识别码.pdf
GB-T 19227-2008 煤中氮的测定方法.pdf
GB-T 17871-1999 氮氧饱和或空气饱和-空气巡回潜水减压程序.pdf
GB-T 13682-1992 螺纹紧固件轴向载荷疲劳试验方法.pdf
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