The scope of this kind of goods include natural marsh gas and artificially made methane.
本货物的范围包括：天然沼气和人工生产的沼气。
Since biogas is a mixture of methane (also known as marsh gas or natural gas, CH4) and carbon dioxide it is a renewable fuel produced from waste treatment.
由于沼气是一种混合的甲烷(又称沼气或天然气，甲烷)和二氧化碳知道它是一种可再生的燃料废物处理产生的。
Marsh gas it is composed mainly of methane which is naturally decomposed from the residue of plants under the condition of air isolation, marsh gas is used mainly as fuel.
沼气，主要成分为甲烷，由植物残体在与空气隔绝的条件下经自然分解而成，沼气主要作燃料。
Marsh gas it is composed mainly of methane which is naturally decomposed from the residue of plants under the condition of air isolation, marsh gas is used mainly as fuel.
沼气，主要成分为甲烷，由植物残体在与空气隔绝的条件下经自然分解而成，沼气主要作燃料。
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