甲烷

基本解释 (translations)

firedamp  ·  methane

词组短语

fire-damp · methyl hydride marsh gas

与甲烷相关的网络例句 [注：此内容来源于网络，仅供参考]

Methods: The twelve volatile halogenated hydrocarbons (1, 1-dichloroethene, dicloromethane, trans-1, 2-dichloroethene, cis-1, 2-dichloroethene, chloroform-1, 1, 1-trichloroethane-1, 2-dichloroethane, tetrachloromethane, bromodichloromethane, dibromochloromethane, tetrachloroentene and bromoform) in drinking water were determined by headspace capillary gas chromatography.

采用顶空毛细管柱气相色谱法测定饮用水中1，1-二氯乙烯、二氯甲烷、反－1，2-二氯乙烯、顺－1，2-二氯乙烯、三氯甲烷、1，1，1-三氯乙烷、1，2-二氯乙烷、四氯化碳、一溴二氯甲烷、二溴一氯甲烷、四氯乙烯及三溴甲烷等12种挥发性卤代有机物。

A few years ago, while working at the Department of Agriculture and Food Science in Northern Ireland, we discovered that aging plants provide most of the chloromethane found in the atmosphere. Because methane, like chloromethane, is released during the burning of biomass, we wondered whether intact plants might also release methane.

氯甲烷是一种会破坏臭氧的氯化气体，过去认为主要来自於海洋与森林火灾；几年前，我们任职於北爱尔兰农业与食品科学部时，发现大气中存在的氯甲烷，大多是由腐朽的植物所排放，因为甲烷跟氯甲烷都是在生质燃烧期间释放出来的，於是我们想知道整株植物是否也可能释放甲烷。

The results indicated that: the water content of product decreased from 2580 PPm to 50 PPm by sweep gas method in the water/chloromethane system and the separation factor of water/chloromethane was 74800; the water content of product decreased from 2580 PPm to 36 PPm by vacuum method in the water/chloromethane system and the separation factor of water/chloromethane was 32500; the separation factor and the flux of the dehydration of dichloromethane were 39900 and 0.172 kg·m~(-2)·h~(-1),respectively; the separation factor and the flux of the dehydration of trichloromethane at 50℃were 57300 and 0.564 kg·m~(-2)·h~(-1), respectively; the separation factor and the flux of the dehydration of carbon tetrachloride at 60℃were 68200 and 0.612 kg·m~(-2)·h~(-1),respectively.

结果表明：利用吹扫气法，对于水/一氯甲烷操作体系，其分离因数高达74800，产品水含量由进料侧的2580 PPm，降低到50 PPm；利用抽真空法，对于水/一氯甲烷操作体系，其分离(来源：93ABC论9090文网www.abclunwen.com)因数高达32500，产品的水含量由进料侧的2580 PPm，降低到36 PPm；对于二氯甲烷脱水体系，水/二氯甲烷分离因数和渗透通量分别为39900和0.172 kg·m~(-2)·h~(-1)；对于氯仿脱水体系，操作温度为50℃时，水/氯仿分离因数和渗透通量分别为57300和0.564 kg·m~(-2)·h~(-1)；对于四氯化碳脱水体系，操作温度为60℃，水/四氯化碳分离因数和渗透通量分别为68200和0.612 kg·m~(-2)·h~(-1)。

This research used the optical frustrated total internal reflection by the coupling of prisms to excite surface plasma waves to measure the resonant angle of the chlorine and Halogen-methane (including the fluoromethane, chloromethane, bromomethane, and iodomethane).

中文摘要本论文是根据光受挫式内部全反射方法利用稜镜的耦合来激发表面电浆波，量测出氯气与卤族甲烷(氟甲烷、氯甲烷、溴化甲烷、碘甲烷)之共振角度。

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 author respectively gave a brief account of the basic characteristics of ancient and today's geothermic field at 1000m and 2000m depth, coal measure strata pressure field at the depth less than 1600m, structural stress field from Jurassic to present, and ancient and today's fluid potential field (that is water potential and gas potential distributing in coal measure strata).

在本区瓦斯分带、已知煤层气显示及其组分研究基础上，探讨了低煤级煤层气的生成机制，指出生成的煤层气应包括褐煤阶段的原生生物甲烷气、长焰煤—气肥煤阶段的热成因甲烷气和煤层埋藏阶段的次生生物甲烷气三种成因甲烷气体；进而论述了煤储层含气饱和度、临界解吸压力、临储压力比、地解压差等甲烷解吸特征，实测与理论含气量、煤层气资源量与资源丰度等煤储层含气性特征。

Production processes of chlorinated methanes including monochloromethane , dichloromethane ,trichloromethane and carbon tetrachloride at home and abroad are introduced.

介绍了甲烷氯化物(一氯甲烷、二氯甲烷、三氯甲烷、四氯化碳)的国内外生产方法，认为我国应尽快发展规模化经济，加速四氯化碳向二氯甲烷、三氯甲烷的工艺转换，开发更多的甲烷氯化物衍生

The studies have showed that some geological events, such as Late Palaeocene Thermal Maximum, had possibly related to the decomposition and outgassing of gas hydrate. Except the strong and abrupt methane releasing in the geological history,...

由于天然气水合物中甲烷逸出对全球气候影响的研究刚刚起步，还缺乏海洋沉积物和海水中甲烷传输的恰当模式，甲烷在海水中的溶解度、甲烷的氧化作用及上升流等因素对其的影响程度，以及它对大气甲烷和二氧化碳浓度变化的具体贡献等目前还很不清楚，亟需深化研究。

Comparing with the result of methyl iodide in intense laser field, some differences are observed:(1) at the same laser field intensity, the highest charged fragment ion of methyl bromide was Br(superscript 3+), lower than I(superscript 6+) of methyl iodide;(2) the dehydrogenation channel was observed in the multiphoton dissociation or Coulomb explosion of methyl bromide, but was not observed in the case of methyl iodide;(3) HBr(superscript +) was observed, but there was no similar channel in the case of methyl iodide;(4) for methyl bromide, the valid charge distance of Coulomb explosion increases with the product of p and q; while in the case of methyl iodide, the distance remained almost the same;(5) the producing channel of CH(superscript + subscript m)(m=0, 1, 2) is different from the ionization-dissociation of methyl iodide in which the stepwise dissociation of CH3(superscript +) was thought to be the main channel, CH(superscript + subscript m)(m=0, 1, 2) of methyl bromide are mainly from the products of the direct dissociation of the dehydrogenated parent ions instead of the stepwise dissociation of CH3(superscript +).

与碘甲烷在强场中的实验结果对比发现：(1)在相同的激光场强下，碘甲烷电离解离的最高价碎片离子为I(上标 6+)而溴甲烷为Br(上标 3+)；(2)溴甲烷质谱中存在母体离子的脱氢产物CHBr和CHBr(上标 2+)，而对于碘甲烷，没有检测到这些通道，C-I键首先断开；(3)质谱中存在H^79Br和H^81Br，而碘甲烷的电离解离中不存在HI产物；(4)溴甲烷库仑两体爆炸的有效电荷间距随着两碎片电荷乘积的增大而增大，而对于碘甲烷此间距几乎不随电荷乘积变化；(5)CH(m=0， 1， 2)的主要生成通道可能与碘甲烷不同，不是来自CH3的顺序脱氢，而是来自脱氢母体离子的直接解离。

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。

与甲烷相关的网络解释 [注：此内容来源于网络，仅供参考]

methane aromatization：甲烷芳构化

甲烷活化:methane activation | 甲烷芳构化:methane aromatization | 甲烷重整:methane reforming

methane aromatization：甲烷无氧芳构化

甲烷蒸汽重整:methane steam reforming | 甲烷无氧芳构化:Methane aromatization | 甲烷燃烧:Catalytic combustion of methane

methyl bromide：溴甲烷

.1.溴甲烷(Methyl bromide) (MB) 俗名 溴代甲烷(Bromomethane) 分子式 CH3Br (1)特性 溴甲烷是一种无色、无味、非易燃熏蒸剂. 气体比重在0℃时为3.27,沸点3.6℃,微溶.

Bromoform：三溴甲烷,溴仿

仪器信息网上的三溴甲烷/溴仿(Bromoform)报价和型号规格为参考报价和型号规格,如需购买三溴甲烷/溴仿(Bromoform)请来信来电咨询,三溴甲烷/溴仿(Bromoform)的报价以相关业务员给您提供的报价和型号规格为准.

chloromethane：氯甲烷

研究植物释放甲烷的想法, 来自于我们对氯甲烷(chloromethane)的研究. 氯甲烷是 一种对臭氧层有破坏作用的气体氯化物,人们认为它主要 产生于海洋和森林火灾. 若干年前,我们在英国北爱尔兰 农业和粮食科学部工作时,

diazomethane：重氮甲烷 重氮甲烷

diastereomeric excess;DE 非對映體過量 非对映体过量 | diazomethane 重氮甲烷 重氮甲烷 | dictyostele 網狀中柱 网状中柱

Freon 12：氟利昂-12;二氟二氯甲烷;F-12

freon-12氟利昂-12;二氟二氯甲烷;F-12 | freon-21氟利昂-21;一氟二氯甲烷;F-21 | freon-22氟利昂-22;二氟一氯甲烷;F-22

methane series：甲烷系

methane oil 甲烷族石油 | methane series 甲烷系 | methane snow 甲烷雪

methane bacteria：甲烷细菌

methane 甲烷 | methane bacteria 甲烷细菌 | methane fermentation 甲烷发酵

Methyl bromide poisoning：溴甲烷中毒,溴甲烷中毒,甲基溴中毒

methyl bromide ==> 溴甲烷,溴化甲烷=>臭化メチル | methyl bromide poisoning ==> 溴甲烷中毒,溴甲烷中毒,甲基溴中毒 | methyl carbonate ==> 碳酸甲酯