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1·The methane content detecting is very important for coal mine production.

甲烷含量的检测对煤矿的安全生产等有着重大的意义。

2·The coalbed methane content is the most important index for the evaluation of coalbed methane.

煤层甲烷含气量是评价煤层气的最重要指标。

3·A great many coal mines which are high coal bed methane content are concentrated in Zhohgqing areas.

重庆是全国有名的高瓦斯矿井和煤与瓦斯突出矿井集中的地区，瓦斯资源丰富。

4·Coal bed methane content is fairly high which threatened safety mining in some areas in Shuangyashan mining area.

双鸭山矿区局部区域煤层瓦斯含量较高，威胁到安全生产。

5·The actual methane yield and methane content of biogas in anaerobic digestion were analysed and studied in this paper.

本文对厌氧消化中实测甲烷产量及沼气中甲烷含量两个问题从理论角度作了分析探讨。

6·The methane content of the biogas was similar and was 50% in the hydrolysis reactor and 70% in the methanogenesis reactor.

两种麦草产生的生物气中的甲烷含量大致相同，在水解反应器中后期为50%左右，在甲烷反应器中为70%左右。

7·Finally the calculation method and formula of coal methane content and pressure are presented by using the emission rate from broken coal.

最后提出了利用煤屑解吸瓦斯流量测算煤层瓦斯压力和瓦斯含量的计算方法和计算公式。

8·Methane content of the gas produced and the methane producing rate were determined by the total number of methane producing bacteria developed.

沼气中甲烷百分含量和日产甲炕效率的高低与产甲炕细菌菌数有关。

9·A great many coal mines which are high coal bed methane content are concentrated in Zhohgqing areas. It is abundant in coal bed methane deposits.

重庆是全国有名的高瓦斯矿井和煤与瓦斯突出矿井集中的地区，瓦斯资源丰富。

10·One natural gas field is in desert, it is a kind of condensate natural gas reservoir that the condensate oil content is lower and the methane content is higher.

某气田地处沙漠地区，属凝析油含量特低、甲烷含量较高的凝析气藏。