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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 27894.5-2012 |
Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 5: Determination of nitrogen,carbon dioxideand C1 to C5 and C6+ hydrocarbons for a laboratory and on-line process application using three columns 天然气 在一定不确定度下用气相色谱法测定组成 第5部分：实验室和在线工艺系统中用三根色谱柱测定氮、二氧化碳和C1至C5及C6+的烃类 |
China National Standards idea |
 English PDF |
| GB/T 14678-1993 |
Air quality--Determination of sulfuretted hydrogen， methyl sulfhydryl， dimethyl sulfideand dimethyl disulfide--Gas chromatography 空气质量 硫化氢、甲硫醇、甲硫醚和二甲二硫的测定 气相色谱法 |
China National Standards idea |
English PDF |
| GB/T 5441.9-1985 |
Test methods for communication cable--Test for ideal screening factor measured at power frequency 通信电缆试验方法 工频条件下理想屏蔽系数试验 |
China National Standards idea |
English PDF |
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