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ISO IEC 9066-2 1989 Information processing systems — Text communication — Reliable Transfer — Part 2 Protocol specification.pdf
ISO 5644 2024 Porcelain Tableware — Specification and test method.pdf
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GB-T 8631-2001 纺织品 织物因冷水浸渍而引起的尺寸变化的测定.pdf
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GB-T 43263-2023 纳米技术 纤维素纳米晶的表征方法.pdf
GB-T 6913-2008 锅炉用水和冷却水分析方法 磷酸盐的测定.pdf
GB-T 4258-2004 60°、90°、120°直柄锥面锪钻.pdf
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GB-T 18150-2006 滚子链传动选择指导.pdf
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