谁知道能找到关于天然气的英文资料吗？知道的告诉一下，谢谢

Natural gas is a gaseous fossil fuel consisting primarily of methane but including significant quantities of ethane, butane, propane, carbon dioxide, nitrogen, helium and hydrogen sulfide.

http://www.cnshu.cn/yxgl/ShowSoft.asp?SoftID=20385

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