1) CH4 mixing ratio
CH4混合比
2) CO2/CH4 substitution rate
CO2/CH4置换比
3) CH_4
CH4
1.
Batch incubation experiments in aid of anaerobic incubation flask were conducted to study the anaerobic degradation and volatilization of hexachlorobenzene(HCB),the change of pH in soil,the emission of CH_4 and CO_2,and the volatilization of HCB in the Hydragric Acrisol and Gleyi-Stagnic Anthrosol added with acetic acid,glucose and citric acid.
结果表明,8周内红壤性水稻土中HCB减少了约20%~44%,加入乙酸抑制HCB的降解,表明低pH条件不利于脱氯反应,加入葡萄糖和柠檬酸在前期抑制后期则促进HCB的降解;乌栅土中HCB减少了约21%~23%,加入小分子有机质对其降解没有明显的效果;六氯苯降解的主要产物为五氯苯(PCB),最终检测到红壤性水稻土中PCB为23~96μg/kg,乌栅土中为64~92μg/kg;HCB的降解与CH4和CO2的释放量在统计学上没有显著的相关性;2种土壤中,外加小分子有机碳均减少了HCB的挥发作用,且红壤性水稻土中HCB的挥发比乌栅土中更强,表明土壤有机质是影响HCB挥发的重要因子。
2.
The effects of the oxides of Mg and Ce on the CO_2 reforming of CH_4 over Ni/nano-Al_2O_3 catalysts were investigated.
考察了助剂Mg、Ce修饰的纳米A l2O3负载N i催化剂对CH4、CO2重整反应制合成气的反应性能影响,采用正交实验筛选催化剂。
4) methane
[英]['mi:θeɪn] [美]['mɛθen]
CH4
1.
Coal mine gas at the ventilation outlet of coal mines can hardly be made use due to its low concentration of methane,which is usually emitted to the atmosphere and cause pollution and loss of energy.
煤矿通风口处瓦斯气的CH4浓度太低无法回收利用,只能排往大气中,既浪费能源,又污染环境。
2.
Utilizing the data of the greenhouse gases(GHGs) of atmosphere from 1991 to 2004 provided by NOAA Earth System Research Laboratory,including carbon dioxide and methane data at Korea of Tae-ahn Peninsula,Mongolia of Ulaan Uul and China of Waliguan stations,the atmospheric concentrations and their trends of GHGs in East Asia in 14 years were analyzed.
利用NOAA Earth System Research Laboratory提供的1991─2004年Tae-ahn(韩国),Ulaan Uul(蒙古)以及瓦里关(中国)的大气温室气体CO2和CH4的数据,对东亚地区大气温室气体的浓度特征及变化趋势进行研究。
3.
The diffusion of methane and carbon dioxide in a-MCMB prepared by the authors, was investigated by using the intelligent gravimetric analyzer apparatus (IGA-003, HIDEN) at 298 K and 258 K.
采用高精度的重力分析仪(IGA003,HIDEN)对天然气主要成分CH4和CO2杂质在活性炭微球材料内的扩散性质进行了研究。
5) CH 4
CH4
1.
The mechanisms of the reaction NH 2+CH 4NH 3+CH 3, NH 2+CH 4CH 3NH 2+H have been studied at B3LYP/6-311G * level of density functional theory.
在密度泛函理论 B3LYP/6 -31 1 G*水平下 ,研究了 NH2 与 CH4的反应机理 。
2.
The reaction of CH 4+MgO→Mg+CH 3OH has been studied on a singlet state potential energy curve at B3LYP/6-311+G (2d,2p) level.
在B3LYP/ 6 311+G(2d ,2p)水平上计算了MgO +CH4 →Mg +CH3 OH反应的单态势能曲线 。
3.
The separation of CH 4 /N 2 gas mixture for improve the concentration of CH 4 by pressure swing adsorption (PSA) is studied.
采用变压吸附技术进行CH4 /N2 气体混合物的分离研究 ,以提高混合气中CH4 的浓度 。
6) mixed double ratio
混合公比
补充资料：混合比
混合比
mixture ratio
hunhebi混合比(mixtuT。ratlo)液体火箭发动机工作时氧化剂质量流量与燃烧剂质量流量之比。又称组元比。它是液体火箭发动机的主要性能参数之一。不同的火箭推进剂或液体火箭发动机有不同的混合比。过量的氧化剂或燃烧剂均会降低发动机性能。热化学计算得到的最佳混合比可保证最高比冲。选定混合比时，要兼顾推力室冷却和推进剂稳定燃烧等条件。它是确定液体推进剂贮箱容积的依据。通常，用安装在推进剂输送系统中的流量控制装置控制混合比。混合比的实际数值在发动机试车时用测量氧化剂和燃烧剂流量方法确定。混合比偏差会造成推进剂某种组元剩余，降低火箭的运载能力。因此，减小混合比偏差可提高火箭发动机的性能。(高峻仑)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条