甲烷

Either way, the methane could have been produced ages ago, noted Mumma's colleague Geronimo Villanueva of Goddard, and been trapped in deep ice until warming released it.

穆马的同事、戈达德太空飞行中心的杰若尼莫·维拉努瓦指出：不管是哪一种情况，甲烷可能是多年前产生的，被困在厚厚的冰层之中，直到升温之后才能释放出来。

The main reason for it is that such glasshouse gases as CO2, CH4 and so on in the atmosphere have become denser than ever because of industrial and agricultural production.

气候变暖的原因主要是工农业生产中产生二氧化碳、甲烷等温室气体导致大气中这些气体浓度的增加。

It is found that the solubility of methyl chloride in n hexane are decreases with the temperature increased and increases with the pressure increased.

从一氯甲烷分压和溶解度的关系曲线可知，溶解度随着温度的升高而减小，随着压力的升高而增大。

He, understandably, is working strictly on protocols, not this methane breeze from the political hick zone.

他理解，是对工作严格的议定书，这不是甲烷微风从政治希克区。

These methanols were treated with BF3 in CH2Cl2 to generate the diferrocenylmethyl carbocations. Without separation from the reaction mixture, the ions were treated with some amines RNH2 [R=C2H5, n-C3H7, n-C4H9, HOCH2CH2, HOCH(CH3)CH2, HOCH2CH(C2H5)] to afford the ferrocenylamines in high yields. The present methodology for preparing α-ferrocenylamines from α-ferrocenyl alcohols enjoys such advantages as simple procedure and inexpensive starting materials.

它们对酸的敏感性很高，与BF3在二氯甲烷中作用可形成稳定的二茂铁基甲基碳正离子，无需从溶液中分离出来，便可与胺RNH2[R=C2H5，n-C3H7，n-C4H9，HOCH2CH2，HOCH(CH3)CH2，HOCH2CH(C2H5)]作用得到产率颇高的二茂铁基胺，这种由α-二茂铁基醇制备α-二茂铁基胺的方法具有简单、快速和原料廉价的特点。

The greenhouse effect?. While methane and other gases contribute to the problem, the chief culprit, ralph lauren homme , by virtue of the volumes produced, is carbon dioxide.

温室效应？。而甲烷和其他气体作出贡献的问题，罪魁祸首，拉尔夫劳伦男士由生产量的美德，是二氧化碳。

In this paper, a high-pressure apparatus for measuring thermal conductivity was developed based on the present transient single hot-wire device of our group.

然而它们的导热系数的研究还相当欠缺，尤其是二甲氧基甲烷及其与柴油混合物的导热系数研究基本上没有人做过。

They may decompose glucose into hydrogen, carbon dioxide and methane

它们能把葡萄糖分解成氢气、二氧化碳和甲烷。

Only hydrogen and carbon dioxide was tested in whole process and the content of bio-hydrogen is 55.4%.

所得生物气产物中没有检测到甲烷，氢气含量为55.4%。

The bulk fraction is a mixture of methane, carbon dioxide, hydrogen, nitrogen and oxygen.

主要成分是甲烷，二氧化碳，氢气，氮气和氧气的混合气体，这些成分的含量一般用所占填埋气的体积比来表示

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。