GB/T 5275.7-2025
气体分析 动态法制备校准用混合气体 第7部分:热式质量流量控制器
Gas analysis—Preparation of calibration gas mixtures using dynamic methods—Part 7:Thermal mass-flow controllers
- 实施日期
- 2026-05-01
- ICS 分类
- 71.100.20
组合使用关键词、标准类型、状态与 ICS 分类,快速定位所需国家标准。
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GB/T 5275.7-2025
Gas analysis—Preparation of calibration gas mixtures using dynamic methods—Part 7:Thermal mass-flow controllers
GB/T 21883-2025
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Pure xenon,high purity xenon and ultra pure xenon
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Structure, main size and basic parameters of steel pipes and fitting lined with plastic
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Safety requirements of daylight press
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Extruders and extrusion lines of rubber and plastics—Part 3:Safety requirements for haul-offs
GB/T 25431.2-2025
Extruders and extrusion lines of rubber and plastics—Part 2: Safety requirements for die face pelletizers
GB/T 25431.1-2025
Extruders and extrusion lines of rubber and plastics—Part 1: Safety requirements for extruders
GB/T 20055-2025
Safety requirements of mill for rubber and plastics
GB/T 46133-2025
General rule for determination of nitrogen content by Dumas combustion method