甲烷

"We observed and mapped multiple plumes of methane on Mars, one of which released about 19,000 metric tons of methane," said co-author Geronimo Villanueva of the Catholic University of America in Washington.

"我们观察到火星上多个甲烷股流，其中一个释放了大约19000公吨甲烷"，华盛顿美洲天主大学与MUMMA共同撰文的Geronimo Villanueva说。

China mainly natural gas used in the production of nitrogen, followed by the production of methanol, formaldehyde, acetylene, methylene chloride, carbon tetrachloride, carbon disulfide, nitromethane, hydrocyanic acid and extraction of helium and carbon black. Since the 70s, has built more than natural gas and oil field associated gas as raw materials for large-scale ammonia plant, as well as a number of small and medium-sized ammonia plant, so that the national structure of the synthetic ammonia production of raw materials, natural gas share of about 30%; also be built at the same time A system of acetylene gas plant to manufacture Vinylon and vinyl acetate, acetylene gas used in the production of methanol.

中国天然气主要用于生产氮肥，其次是生产甲醇、甲醛、乙炔、二氯甲烷、四氯化碳、二硫化碳、硝基甲烷、氢氰酸和炭黑以及提取氦气。70年代以来，已兴建多座天然气和油田伴生气为原料的大型合成氨厂，以及一批中、小型合成氨厂，使全国合成氨生产原料结构中，天然气所占的比例约达到30％；同时还兴建了天然气制乙炔工厂，以制造维尼纶和醋酸乙烯酯，乙炔尾气用于生产甲醇。

The main results were as follows: with the evolution of Indicia rice varieties, Methane transport rate of plant increased, the root oxidizes increased gradually.

结果表明：在品种演进过程中，稻株甲烷传输速率逐渐增大(南京1号偏小除外)，根氧化力与甲烷传输速率趋势一致。

Adsorption isotherm shows that the adsorption type belongs to theⅠadsorption, and in according with micropore filling theory; Adsorption isobar shows that low temperature favors the adsorption; the water contained in the adsorbents is harmful to the increase of the adsorption capacity.

V/V(吸附甲烷的体积/容器的体积)。甲烷在富纳米孔炭质吸附剂上的等温吸附曲线表明，吸附类型属于Ⅰ类吸附，符合微孔填充理论；等压吸附曲线表明，低温有利于体积吸附量的增加；吸附剂中水分的增加对吸附有不利的影响。

Meanwhile,the factors which affected the drying were also analyzed including the flow rate of methyl chloride ,the content of isobutylene,the amount of regenerated nitrogen,the regeneration time,the discharging condition of methyl chloride remaining in tower before regeneration,the using time of Al_2O_3,and so on.

研究了丁基橡胶装置干燥塔的干燥、再生过程，对影响干燥效果的主要因素如氯甲烷流量、异丁烯含量、再生氮气量、再生时间、再生前塔内残留氯甲烷的排放程度、干燥剂Al_2O_3的使用时间等进行了分析。

In order to find a kind of low-cost and high-capability catalyst for methane combustion, a series of CeO_2-ZrO_2-Al_2O_3 solid solution, in which the content of Ce_0.67Zr_0.33O_2 and Al_2O_3 were different, were prepared by co-precipitation method.

近年来，非贵金属氧化物甲烷燃烧催化剂的研究虽然十分活跃，但对铁基氧化物催化剂研究不多，其主要原因是铁基氧化物催化剂对甲烷燃烧的催化活性较差。

GC ECD method was used to analyze the concentration of methyl chloride in atmospheric samples collected from different latitude.

用GC ECD的方法对不同纬度氯甲烷浓度的分析研究表明，大气中氯甲烷的全球浓度表现出从赤道向两级递减的趋势。

The consumption of methyl chloride which is the main raw materials for synthesizing methylchlorosilanes is about forty percent of cost of methylchlorosilanes.

而作为合成甲基氯硅烷的基础原料，氯甲烷成本占甲基氯硅烷成本的40％，氯甲烷生产的经济规模化一直是制约我国有机硅行业发展的关键技术之一。

GC ECD method was used to analyze the concentration of methyl chloride in atmospheric samples collected from different latitude. The experimental results show that the atmospheric concentrations of methyl chloride show a tendency to decrease towards the poles.

用GC ECD的方法对不同纬度氯甲烷浓度的分析研究表明，大气中氯甲烷的全球浓度表现出从赤道向两级递减的趋势。

Preferably, the product is a monohalogenated methane, more preferably, methyl chloride.

优选地，所述产物是单卤代甲烷，更优选为氯甲烷。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。