DIN EN ISO 6974-1-2012 天然气.使用气相色谱法对规定的不确定度组分的测定.第1部分:通用导则和成分计算(ISO 6974-1-2012).德文版本EN ISO 6974-1-2012
Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 1: General guidelines and calculation of composition (ISO 6974-1:2012); German version EN ISO 6974-1:2012