甲烷

After the identification signs of natural gas hydrate and its stability conditions were expounded systematically, the decomposition of natural gas hydrate in glacial and interglacial period and its potential influence on the global climate change, marine geological calamities, and benthal biological group were discussed emphatically.

在综合论述了天然气水合物的识别标志和稳定条件的基础上，着重讨论了冰期与间冰期天然气水合物的分解及其对全球气候变化、海洋地质灾害和海底生物种群的影响，同时给出了甲烷释放量的计算公式，并对拓展天然气水合物稳定性与全球环境变化之间相互关系的研究，提出了需要回答的关键问题。

The evolution of flow patterns are presented at different interaction stages and the bifurcate shock waves , distorted flame fronts and induced vortices are discussed according to the calculated results.

基于带化学反应的Navier Stokes方程和有关的热力学和反应动力学数据，利用改进的VLS格式，对甲烷空气混合物中激波与火焰的相互作用进行了数值模拟。

On earth, 90 percent of the methane in the atmosphere comes from the biochemical activity of life.

在地球上，大气层中90 %的甲烷来自于生命的生物化学活动。

The trigger mechanism of PETM remains obscure. One plausible explanation involves abrupt release of marine methane hydrate. Magma activity and bolide effect are also announced accounting for the occurrence of PETM.

对于PETM的触发机制，主流的观点认为是海底天然气水合物突然释放造成巨量甲烷迅速进入表层系统引发的碳循环系统内部反馈。

Based on the characteristic that boracic acid (H3BO3) has a condasation and complexation reaction with 3-MCPD forming a negative-charged adduct in aqueous phase, arapid method for the direct determination of 3-MCPD in HVP by capillary electrophoresis with conductivity detection was investigated.

利用硼酸能与3-氯-1，2-丙二醇(3-MCPD)上的2个邻位羟基进行键合生成配合阴离子、从而增加多羟基化合物的负电荷的特性，在15 mmol/L 三羟甲基氨基甲烷-10 mmol/L H3BO3(pH 8.3)介质中，采用毛细管电泳/电导检测法分离检测了3-MCPD，该方法的线性范围为0.5-20 mg/L，检出限为0.1 mg/L(S/N=3)。

We projected the temperature pressure parameters of the bott...

将这些地方海底第一层沉积底界面处的温度—压力参数投于甲烷形成天然气水合物的温度—压力图上，发现它们均出现于水合物存在之区域中。

Such experiments should be conducted to determine the adsorptive capacity of GAC for bromate- and THM-removal in ozonated seawater.

此类试验应该可被用于确定活性炭对臭氧海水中的溴酸盐和卤代甲烷的吸附能力。

The method of determination of methyl bromide in fumigation progress was developed by GC 5000 A.

探讨了气相色谱法测定熏蒸处理过程中溴甲烷浓度的检测方法。

But the government restricts the use of methyl bromide , and countries have agreed to an international treaty to ban it.

但是政府限制了溴化甲烷的使用，许多国家也达成国际协定禁止使用它。

Bromoform was the only trihalomethane found in significant amount.

溴仿是发现的唯一含量较高的卤代甲烷类物质。

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。