查询词典 methane

The experimental results indicated that the yield of 2,6-DMN can reach above 38%, when the usage of dimethylnaphthalene was 2g, the temperature reached 18℃, the reaction time was 2.5h, the mole ratio of water-free aluminum trioxide to dimethylnaphthalene was 0.8, the mole ratio of transmethylation agent tetramethylbenzene to dimethylnaphthalene was 1.0, the usage of methane trichloride was 15mL.

结果表明，2-甲基萘(2-MN)使用量为2g时，反应温度为18℃、时间为2.5h、n：n（2-甲基萘）=0.8、n：n（2-甲基萘）=1.0、二氯甲烷用量为15mL时，2，6-DMN的收率可达38%。

The 2002 edition of "Hygienic Standard for Cosmetics" in the provisions of banned cosmetics has 496 kinds of chemical substances, while the 2007 version by the new and change, a total of 1286 kinds of banned chemicals, including chlorine acetaldehyde, chlorinated methane, trichloro toluene.

在&2002年版卫生标准的化妆品禁止在化妆品的规定&的496种化学物质，而新的变化，但一千二百八十六种禁止化学品，包括氯乙醛，氯化甲烷，三氯共2007版甲苯。

The invention relates to a pipeline polyurea outer anticorrosive coating and the making method thereof, making heated prepolymerization reaction on dibenzo-methane diisocyanate, carbodiimide diisocyanate, polyether binary alcohol and polyether trihydric alcohol to prepare prepolymer solution A, and making end amino polyethylene oxide ether, dimethyl sulfur-based toluene diamine, diethyl diamine, iso-propyl titanate solution, polyacrylate, carbon black, titanium dioxide and lightweight calcium carbonate into solution B, and as using, respectively heating the solutions A and B to 65 deg.C and then mixing them, then quickly spraying and curing to form a coat.

本发明涉及一种管道用聚脲外防腐涂料及制造方法，由二苯基甲烷二异氰酸酯、碳化二亚胺化二异氰酸酯、聚醚二元醇和聚醚三元醇通过加热预聚反应制成预聚物的A液、由端氨基聚氧化乙烯醚、二甲硫基甲苯二胺、二乙基甲苯二胺、钛酸异丙酯溶液、聚丙烯酸酯溶液、碳黑、钛白粉和轻质碳酸钙配制而成的B液组成，使用时将A液和B液分别加热至65℃后混合，然后快速喷涂固化形成涂层。

Thus, CO2 can be sequestrated in the deep unminable coal seams which enhance coalbed methane production of the deep unminable coal seams synchronously.

由于煤介质具有特殊的双重孔隙结构、吸附性强等物性特征，对CO2具有很强的吸附能力，且大于煤介质吸附CH4的能力，因此，可将CO2注入深部不可开采煤层储存，在长久处置CO2的同时亦可促进深部煤层气的开采。

The catalytic activity is much higher than that of the unpromoted sample Fe/Zr, while light olefins selectivity decreases and methane formation increases.

催化剂的催化活性比Fe/Zr及Fe/La催化剂都大大提高，甲烷选择性也有所增加，烯烃选择性降低。

Methane (as a typical poly-atomic molecule gas) and argon are investigated through shock experiments respectively. In eachexperiment, the unshocked specimen is in the state of normal atmosphere and roomtemperature.

分别选用甲烷(作为典型的多原子分子气体)和氩气进行了实验研究，实验的初始条件接近常态。

Thus, unless humans are around to smell the distinctive sent of methane gas, they would be unware of the release of this gas due to stretched rock beneath their feet.

因此，由于人们脚下的岩石是延展着的，除非人类在周围闻到了甲烷这种特别的气味，他们才会知道有这种气体释放出来的。

This new gas was mostly methane, and Volta is credited with its discovery.

这种新的瓦斯大部份是甲烷，而且伏打相信他的发现

In recent years, combustion researchers have increasingly taken cognizance of the importance and pressing of study on micro-combustion, especially on catalytic combustion of methane in micro-scale.

近年来，燃烧工作者已经越来越清楚的认识到对微尺度燃烧进行研究的必要性，尤其是甲烷的微尺度催化燃烧，到目前为止，国内还没有其他单位开展过这方面的研究。

As part of theirnatural digestion process they produce methane; they chew the cud, they have asecond stomach, and inside that stomach there's bacteria that break downcellulose in grass to release energy.

他们在消化过程中会产生甲烷，他们咀嚼反刍的食物，而第二个胃里的细菌会分解植物的纤维素，释放其中的能量，该过程即所谓的厌氧程序，在无氧状态下进行，而所产生的甲烷大多经由打嗝释放。

The teacher likes the honeymouthed little girl very much.

老师很喜欢这个嘴甜的小姑娘。

Mr. Notker Bien's interests are traveling, spending quality time with the family and long-distance-running.

诺特卡·柏恩先生热爱旅游，长跑，以及和家人一起共度美好时光。