High levels of methane gas have raised fears of further explosions and hindered rescue efforts.
高浓度甲烷增加了后续发生爆炸的危险性，也对救援工作造成了妨碍。
She talked to EarthSky about the high concentrations of methane gas she discovered in oil plumes deep beneath the surface of the Gulf.
她告诉EarthSky，深海处的原油层已经产生了高浓度的甲烷气体。
So far, Jackson's results are consistent: What's in peoples' Wells is deep gas, created in high heat with its own chemical signature. It's not like the methane in this old seep.
目前，Jackson的结论仍然不变：水井中的是地下深处高热生成的甲烷，有自己的化学特征，与常年渗漏的沼气不一样。
Variations of the process enable production of high purity hydrogen, methanol, ammonia, methane or low heating value gas.
此过程的演变工艺可以生产高纯度氢气、甲醇、氨、甲烷或低热值气体。
High position bores and elevation bores methane drainage technique can prevent gas problem successfully.
采用高位钻孔和仰角钻孔抽放瓦斯技术，有效地防止了瓦斯超限。
The Jurassic coal in Kuqa Depression has high gas potential and mainly produces methane at the high thermal evolution stage.
库车坳陷侏罗系煤具有高的产气性，在高演化阶段主要产甲烷气；
Cracked gas in high-temperature causes methane carbon isotope to heavy.
高温裂解气的生成造成甲烷碳同位素变重的假象。
Sihe mine is endowed with rich coal bed methane resources. The concentration of recovered underground gas is high, and the gas can be utilized for many purposes.
晋城寺河煤矿煤层气资源丰富，井下抽采煤层气的浓度高，可作为多种用途。
The authors propose a method of gas emission forecast and that of determining reasonable ventilation parameters in fully mechanized face with high contents of methane.
提出了高沼气综采工作面沼气涌出的预测方法及合理通风参数的确定方法。
Lastly, it is pointed out that the middle region with high gas content is a favourable target for exploration of coalbed methane.
最后指出中部高含气量区是最有利的煤层气勘探靶区。
The experimental results show that the system has steady performance, high sensitivity, wide measurement range, good repeatability, thus it is fit for detecting methane gas in coal mine underground.
实验结果表明系统性能较为稳定，灵敏度较高，测量范围宽，重复性较好，适用于煤矿井下瓦斯检测。
However, the methane-oxidizing bacteria and anaerobic cellulose-decomposing bacteria were found high in quantity, and SRB low in quantity at the outer edge of the gas field.
气田外缘甲烷氧化菌、厌氧纤维素分解菌数量较高，而硫酸菌还原菌较低。
Natural gas from No. 1 and No. 2 gas fields in Caidamu basin is characterized by high content methane, high purity and high formation water salinity.
柴达木盆地涩北一号、二号气田具有天然气甲烷含量高、纯度高、地层水矿化度高的特点。
Natural gas from No. 1 and No. 2 gas fields in Caidamu basin is characterized by high content methane, high purity and high formation water salinity.
柴达木盆地涩北一号、二号气田具有天然气甲烷含量高、纯度高、地层水矿化度高的特点。
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