GB/T 27894.3-2011
天然氣.在一定不確定度下用氣相色譜法測定組分第3部分:用兩根填充柱測定氫、氦、氧、氮、二氧化碳和直至C8的烴類
Natrual gas.Determination of composition with defined uncertainty by gas chromatography.Part 3:Determination of hydrogen,helium,oxyen,nitrogen,carbon dioxide and hydrocarbons up to C using two packed columns
GBT27894.3-2011, GB27894.3-2011