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| 11. | Must be some kind of methane buildup. |
| 应该是沼气集聚起来了. |
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| 12. | methane air mixture |
| 沼气空气混合物 |
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| 13. | methane drainage borehole |
| 沼气排气钻孔 |
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| 14. | Methane is the second most important greenhouse gas after carbon dioxide, and rice fields are among the |
| 沼气是仅次于二氧化碳的第2重要的温室气体，稻田是沼气的最大来源。 |
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| 15. | semiconductor methane alarm |
| 半导体沼气警报器 |
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| 16. | lower flammability limit of methane |
| 沼气成分燃烧下限 |
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| 17. | methane carrier |
| 甲烷运输船沼气运输船 |
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| 18. | International Symposium on Coal Bed Methane |
| 国际煤床沼气专题讨论会 |
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| 19. | detector ,firedamp (i.e., methane) |
| 沼气（即甲烷）测定器 |
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| 20. | Those mines have the highest concentration of methane gas. |
| 那些矿井全都充满着高密度的沼气 |
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