Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 1: General guidelines and calculation of composition - Technical Corrigendum 1 (ISO 6974-1:2012/Cor 1:2012)
天然气 - 气相色谱法测定组成和相关不确定度 - 第1部分:组成的一般准则和计算 - 技术勘误1（ISO 6974-1:2012/Cor 1:2012）

2012-11-15

Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 2: Uncertainty calculations (ISO 6974-2:2012)
天然气 - 气相色谱法测定组成和相关不确定度 - 第2部分:不确定度计算（ISO 6974-2:2012）

2012-05-15

BS EN ISO 6974-1. Natural gas. Determination of composition and associated uncertainty by gas chromatography. Part 1: General guidelines and calculation of composition
BS EN ISO 6974-1 天然气 用气相色谱法测定成分和相关不确定度 第1部分:一般指南和成分计算

2010-04-06

天然气 用气相色谱法测定组成和计算相关不确定度 第1部分：总导则和组成计算
Natural gas—Determination of composition and associated uncertainty by gas chromatography—Part 1: General guidelines and calculation of composition

2020-09-29

Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 1: General guidelines and calculation of composition
天然气——气相色谱法测定成分和相关不确定度第1部分:一般指南和成分计算

2012-05-15

Газ природный. Определение состава методом газовой хроматографии с оценкой неопределенности. Часть 1. Общие указания и определение состава
天然气 - 通过气相色谱测定组合物和相关不确定度 - 第1部分:一般指导原则和组成计算

Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 5: Isothermal method for nitrogen, carbon dioxide, C1 to C5 hydrocarbons and C6+ hydrocarbons (ISO 6974-5:2014)
天然气 - 气相色谱法测定组成和相关不确定度 - 第5部分:氮 二氧化碳 C1至C5烃和C6烃的等温方法（ISO 6974-5:2014）

2014-07-16

Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 5: Isothermal method for nitrogen, carbon dioxide, C1 to C5 hydrocarbons and C6+ hydrocarbons
天然气 - 通过气相色谱法测定组成和相关不确定度 - 第5部分:氮 二氧化碳 C1至C5烃和C6烃的等温法

2014-07-04

Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 6: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and C1 to C8 hydrocarbons using three capillary columns (ISO 6974-6:2002)
天然气 - 通过气相色谱法测定具有明确不确定度的组成 - 第6部分:使用三个毛细管柱（ISO 6974-6:2002）测定氢 氦 氧 氮 二氧化碳和C1至C8烃

2005-06-01

天然气 在一定不确定度下用气相色谱法测定组成 第6部分：用三根毛细管色谱柱测定氢、氦、氧、氮、二氧化碳和C1至C8的烃类
Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 6: Determination of hydrogen helium oxygen nitrogen carbon dioxide and C1 to C8 hydrocarbons using three capillary columns

2012-12-31

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

2012-11-05

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
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

2012-11-05

천연가스 — 가스 크로마토그래피에 의한조성 및 관련 불확도 측정 —제5부: 질소, 이산화탄소, C1∼C5, C6＋탄화수소에 대한 등온선법
天然气.用气相色谱法测定组成和相关不确定度.第5部分:氮 二氧化碳 C1至C5碳氢化合物和C6＋碳氢化合物的等温法

2015-12-31

Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 4: Determination of nitrogen, carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line measuring system using two columns (ISO 6974-4:2000)
天然气 - 通过气相色谱法确定具有明确不确定度的组成 - 第4部分:使用两列的实验室和在线测量系统测定氮 二氧化碳和C1至C5和C6烃类（ISO 6974-4:2000）

2001-08-22

天然气 在一定不确定度下用气相色谱法测定组成 第4部分：实验室和在线测量系统中用两根色谱柱测定氮、二氧化碳和C1至C5及C6+的烃类
Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 4: Determination of nitrogen,carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line measuring system using two columns

2012-11-05