GB 11721-1989
车间空气中环氧乙烷卫生标准
Health standard for ethylene oxide in the air of workplace
- 实施日期
- 1990-07-01
- ICS 分类
- 13.040.30
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。
找到 70,494 条
GB 11721-1989
Health standard for ethylene oxide in the air of workplace
GB 11720-1989
Health standard for trichlorfon in the air ofworkplace
GB/T 11449.5-1989
Flanges for waveguides--Part 6:Relevant specification for flanges for medium flat rectangular waveguides
GB/T 11449.3-1989
Flanges for waveguides--Part3:Relevant specification for flanges for flat rectangular waveguides
GB/T 11449.2-1989
Flanges for waveguides--Part 2:Relevant specification for flanges for ordinary rectangular waveguides
GB/T 11449.1-1989
Flanges for waveguides--Part 1:General requirements
GB/T 11449.4-1989
Flanges for waveguides--Part 4:Relevant specification for flanges for circular waveguides
GB/T 11450.4-1989
Hollow metallic waveguides--Part 4:Relevant specifications for circular waveguides
GB/T 11450.3-1989
Hollow metallic waveguides--Part 3:Relevant specifications for flate rectangular waveguides
GB/T 11451-1989
Flexible waveguide assembly performance
GB/T 11450.6-1989
Hollow metallic waveguides--Part 7:Relevant specifications for square waveguides
GB/T 11450.5-1989
Hollow metallic waveguides--Part 6:Relevant specifications for medium flat rectangular waveguides
GB/T 11455-1989
Hearing aid equipment not entirely wornon the listener
GB/T 11453-1989
Methods of measurement of performance characteristics of hearing aids under simulated in situ working conditions
GB/T 11459.2-1989
24×24 Dot matrix font set of Chinses ideograms for information processing--Communication subset
GB/T 11458.2-1989
15×16 Dot matrix font data set of Chinese ideograms for information processing--Communication subset
GB/T 11458.1-1989
15×16 Dot matrix font set ofChinese ideograms for information processing--Communication subset
GB/T 11459.1-1989
24×24 Dot matrix font set ofChinese ideograms for information processing--Communication subset
GB/T 11501-1989
Spectral conditions for measuring photographydensity
GB/T 11500-1989
Geometric conditions for measuring transmission density