查询词典 methane

Methane chloridate , general name of monochloro methane , dichloro methane , trifluoro methane and tetra chloromethane mainly composed of natural gas and liquefied chlorine gas , can not only be used as solvent , degreasant , decolourant , aerosol , freezing medium and detoxicator , etc .but also the raw material for the production of medicine , pesticide , organic ailicon and organ fluorine , etc.

甲烷氯化物是包括一氯甲烷、二氯甲烷、三氯甲烷、四氯化碳四种产品的总称。甲烷氯化物除可作为溶剂、脱脂剂、漂白剂、氯雾剂、制冷剂、灭火剂、麻醉剂等以外，还是生产医药、农药、有机硅和有机氟系列产品等原料。

Through the field test in the 103 working face of Shanxi Heshun Tianchi Energy Co.,Ltd., it is showed that the degasification parameter of relieved methane is reasonable. The paper can provide a certain theoretical and technological foundation for optimizing achieving degasification system of relieved methane and safety and simultaneous extracting of coal and methane.

通过山西和顺天池能源有限责任公司103综放面的现场实验，说明所得到的卸压瓦斯抽采布置参数较为合理，保证了工作面的安全生产，为优化卸压瓦斯抽采系统、实现煤与瓦斯安全共采提供了一定的理论依据和技术支持。

In this study,we analyze several calculation methods of the production rate of methane in rubbish and make a detailed calculation of the production rate and the cumulate output of methane. On the basis of this study,we use a real rubbish dumping field to calculate the production rate and the cumulate output of methane.

本文比较分析了几种常用的有关垃圾场甲烷气产率计算方法，并详细计算了甲烷的产率及累计产量，在此基础上用一个比较实际的垃圾填埋场计算垃圾填埋过程中甲烷气的产率情况及累计产量，为垃圾填埋场的沼气发电提供了可靠的资料。

Project Contents: Methane chloridate is a kind of chemical product including monochloro methane, dichloro methane, trifluoro methane, tetrachloromethane. It is an important chemical material and solvent.

建设内容：甲烷氯化物是一氯甲烷、二氯甲烷、三氯甲烷、四氯化碳四种甲烷氯化物的总称，是主要的化工原料和溶剂。

Methane chloridate is a kind of chemical product including monochloro methane, dichloro methane, trifluoro methane, tetrachloromethane.

项目内容：甲烷氯化物是包括一氯甲烷、二氯甲烷、三氯甲烷、四氯化碳四种C1氯烃氯产品的总称，是氯碱工业后加工的一个重要有机耗氯产品。

From the development of methane chloridate production, the early methane chloridate were mainly produced by methane chlorination, with the rapid development of methanol industry, the advantage of methanol hydrochlorinate become clearer and clearer and the methanol hydrochlorinate will take the place of methane chlorination in the world.

甲醇氢氯化法包括甲醇氢氯化反应生成一氯甲烷和一氯甲烷氯化生成多氯甲烷两步。按国外先进水平，该法甲醇总收率可达97.7％，氯总收率可达98.6％。从世界甲烷氯化物生产的发展来看，早期的甲烷氯化物生产是以甲烷热氯化法为主。

The raw material technology that manufactures methane chloride at present basically has methane to heat up chloridize law and law of methanol hydrogen chloridize two kinds, latter already took absolutely advantage, the whole world makes an appointment with the methane chloridize products of 15% only can be to be based on methane law, the others uses methanol method entirely.

目前生产甲烷氯化物的原料工艺主要有甲烷热氯化法和甲醇氢氯化法两种，后者已占绝对优势，全球只有约15%的甲烷氯化物产能是基于甲烷法，其余全部采用甲醇法。

Methane adsorbed on the Mn〓O〓-Na〓WO〓/SiO〓 catalyst can not be found, but it can be adsorbed on outgassed silica at 173K. Such adsorption is formed by interaction of the adsorbed methane with O〓〓 sites and hydroxyls on the surface. The appearance of the band at 2904cm〓 of the V〓 mode (sym. stretch.), which is an infrared forbidden vibration, implies that the Td symmetry of the methane molecule may be distorted somewhat on the surface of silica. The small frequency shift (30cm〓) of OH stretching indicates that only a weak hydrogen-bonding interaction between adsorbed methane and hydroxyls exists in the methane adsorption.

甲烷不能在Mn2O3-Na2WO4/SiO2催化剂上吸附但在l73K的温度条件下可吸附于SiO〓表面上，这种吸附是通过吸附甲烷与表面配位不饱和氧和表面羟基作用而形成的，红外禁阻的V〓振动模式显示出红外活性说明甲烷分子的Td对称性发生畸变，甲烷吸附后羟基位移只有30cm〓，吸附甲烷同表面羟基间的氢键作用很弱。

The study of methane-accumulation prevention and methane drainage theory and technology is the key for solving the problem of mine methane explosion accidents while the study of coal and methane outburst prediction together with the preventive measure sand technology is the basic guarantee to the controlling of coal and methane outbursts.

防止瓦斯积聚与瓦斯排放理论及其技术的研究，是解决矿井瓦斯爆炸事故发生的关键所在，而研究煤与瓦斯突出的预测及其防治措施技术是控制煤与瓦斯突出发生的根本保证。本文根据上述两方面存在的瓦斯问题，以理论、实验、计算机数值模拟和井下试验相结合的方法开展研究工作。

Under this condition, a lot of new influence factors appear, the superficial model of coalbed methane is no longer suitable, so we set up the coalbed methane seepage model considered slip effect and porosity pressure, set up the coalbed methane seepage model considered coupling of slip effect and temperature field, set up the coalbed methane seepage model considered coupling of the slip effect and two phase of water - gas in this paper.

而进入深部开采后出现了许多新的影响因素使得原有的浅部煤层气渗流模型不再适用，因此本文建立了考虑滑脱效应及孔隙压力的煤层气渗流模型，建立了考虑滑脱效应及温度场耦合的煤层气渗流的数学模型，建立了考虑滑脱效应的水气耦合煤层气渗流数学模型。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐