emission laws of methane 瓦斯涌出规律
Planting of rice was greatly contributed to emission of methane.
旱地土壤淹水种稻后的甲烷释放量是黄松土>黄筋泥>成泥土。
The document will also point out that the emission of methane by cows is responsible for 4 per cent of the UK's greenhouse gases.
起草文件中还指出，英国排放的温室气体中，有4%要归咎于因养殖奶牛而产生的甲烷。
The emission of methane and nitrous oxide is largely the result of agricultural activities; nitrous oxide from fertilisers and methane mostly from cows.
甲烷和一氧化二氮的排放主要是农业活动的结果：一氧化二氮源于化肥而甲烷主要来自奶牛。
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