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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 18779.4-2020 |
Geometrical product specifications (GPS)—Inspection by measurement of workpieces and measuring equipment—Part 4: background on functional limits and specification limits in decision rules 产品几何技术规范（GPS） 工件与测量设备的测量检验 第4部分：判定规则中功能限与规范限的基础 |
China National Standards background |
 English PDF |
| GB/T 35570-2017 |
Determination of tritium activity concentration in sea water—Low-background liquid scintillation spectrometry method 海水中氚的测定 低本底液体闪烁能谱法 |
China National Standards background |
English PDF |
| GB/Z 32490-2016 |
Surface chemical analysis—X-ray photoelectron spectroscopy—Procedures for determining backgrounds 表面化学分析 X射线光电子能谱 确定本底的程序 |
China National Standards background |
English PDF |
| GB/T 31709-2015 |
Data processing of background atmospheric carbon dioxide and methane concentration measured by in situ gas chromatographic (GC) system 气相色谱法本底大气二氧化碳和甲烷浓度在线观测数据处理方法 |
China National Standards background |
English PDF |
| GB/T 31707-2015 |
Data processing of background atmospheric carbon monoxide concentration measured by in situ gas chromatographic (GC) system 气相色谱法本底大气一氧化碳浓度在线观测数据处理方法 |
China National Standards background |
English PDF |
| GB/T 31705-2015 |
In situ mesaurement of background atmospheric carbon dioxide and methane concentration by gas chromatographic(GC) system 气相色谱法本底大气二氧化碳和甲烷浓度在线观测方法 |
China National Standards background |
English PDF |
| GB 31224-2014 |
Specifications for observing environs protection of atmosphere background watch station 气象探测环境保护规范 大气本底站 |
China National Standards background |
English PDF |
| GB/T 30151-2013 |
Characterization of the spectrum background in HPGe gamma-ray spectrometry 高纯锗γ谱仪本底谱的特性 |
China National Standards background |
English PDF |
| GB/T 11682-2008 |
Low background alpha and/or beta measuring instruments 低本底α和/或β测量仪 |
China National Standards background |
English PDF |
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