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  • ISO 21925-2-2021耐燃试验 空气分配系统用防火挡板 第2部分:膨胀式挡板Fire resistance tests — Fire dampers fo...2022-04-04
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  • VDI 2066 Blatt 1-2021Particulate matter measurement - Dust measurement in flowing gases - Gravimetric determ...2022-04-04
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  • DB33/T 2379-2021小蚕人工饲料饲育技术规程Technical regulation for the rearing of young silkworms (Bombyx mori...2022-04-04
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  • BS ISO 11056-2021Sensory analysis. Methodology. Magnitude estimation method2022-04-04
  • ASTM B770-2021Standard Specification for Copper-Beryllium Alloy Sand Castings for General Applications2022-04-04
  • ASTM A875/A875M-2021Standard Specification for Steel Sheet, Zinc-5% Aluminum Alloy-Coated by the Hot-Dip Pro...2022-04-04
  • HG/T 5991-2021聚碳酸酯行业绿色工厂评价要求2022-04-04
  • GB/T 39984-2021泵系统能耗评估Pump system energy assessment2022-04-04
  • ISO 8081-2021Aerospace process — Chemical conversion coating for aluminium alloys — General purpose2022-04-04
  • BS ISO/IEC 19075-1-2021Information technology. Guidance for the use of database language SQL. Part 1:XQuery ...2022-04-04
  • T/ZZB 2130-2021正丁基硫代磷酰三胺(NBPT)2022-04-04
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  • BS EN ISO 18219-2-2021Leather. Determination of chlorinated hydrocarbons in leather. Chromatographic method ...2022-04-04
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  • GB/T 40196-2021X射线荧光能谱仪测定防腐木材和木材防腐剂中CCA和ACQ的方法Method for analysing CCA and ACQ in pr...2022-04-04