查询词典 dioxide

So studies of adsorption behavior near the critical region of carbon dioxide were carried out on porous materials presently.

临界温度附近吸附现象具有重要的实际意义和理论价值，因此本文重点研究二氧化碳临界温度附近多孔固体上的吸附行为。

The main culprit is carbon dioxide, more than half of which is produced by burning fossil fuels.

这是由于温室气体的增长，主要的罪魁祸首是二氧化碳——一半以上是由于燃烧矿物燃料所产生的。

We can take the first step to planting trees to absorb carbon dioxide, thereby curbing global warming.

我们可以采取的第一项措施来是植树来吸收二氧化碳，从而抑制全球变暖。

The paper mainly studies the new preparation technologies of cyanamide. The paper reviews the preparation technologies of cyanamide in domestic and overseas. We analyze the advantage and disadvantage of all the technologies, and we design two new technologies: urea- cyanamide method and ammonia, carbon dioxide- cyanamide method.

本文主要研究了制备氰胺的新工艺，综述了国内外氰胺工业生产的几种主要工艺，分析了各工艺的利弊，设计了两条新的工艺路线，即尿素-氰胺法和氨气、二氧化碳-氰胺法。

Under the optimized conditions, in-situ-generated N,N -dioxide from the corresponding amide (10 mol%) and m-CPBA (20 mol%) retained the same asymmetric catalytic activity and enantioselectivity, and most of the aromatic,α,β-unsaturated, heterocyclic, aliphatic and steric hindrance ketones could be converted into the corresponding cyanohydrin trimethylsilyl ethers in up to 99% yield and 93% ee.

底物扩展证明，该有机小分子催化体系对芳香酮、杂芳香酮、脂肪酮、位阻酮以及α，β-不饱和酮都具有优良的手性诱导能力，收率高达99％，对映选择性达93％ee。

Two genetic types of dawsonite, namely inorganic and organic are divided in response to origin of carbon dioxide. Inorganic genesis includes magmatic origin and carbonate decomposition origin.

CO2气的来源决定了片钠铝石具有无机和有机两大成因类型，其中，无机成因包括岩浆成因和碳酸盐热解成因。

The sandstone with abundant dawsonite can be used to study the genetic relationship between the authigenic minerals caused by injected CO2 gas and original CO2 in Gudian carbonate dioxide gas field of Songliao Basin.

松辽盆地孤店二氧化碳气田储集砂岩中含有大量片钠铝石，根据其特征可以查明注入CO2气形成的自生矿物与CO2成因之间的联系。

The calculated δ13C values of CO2 gas being in equilibrium with dawsonite ranged from -8.7‰ to-6.9‰ and was in coincidence with the δ13C values ranging from -9.76‰to -5.74‰ of CO2 gas in Gudian carbonate dioxide gas field.

由于含片钠铝石砂岩与CO2气的分布都受控于深大断裂和玄武岩，CO2气和形成片钠铝石的CO2绝大部分属于幔源岩浆型。

Fatty acid ; mineral catalysis ; low temperature ; decarboxylation ; detecting method ; carbon dioxide

脂肪酸；矿物催化；低温；脱羧作用；检测方法；二氧化碳

The paper focused on the inhibitor concentration and the inhibition performance changing with time. The performance and the growth and decay law of film formed on Q235 steel in saturated carbon dioxide salt solution were studied by weight loss, polarization curve and EIS.

本文采用失重法、弱极化法、交流阻抗法等手段研究了1种新型咪唑啉缓蚀剂对Q235钢在饱和CO2盐溶液中不同浓度随时间的缓蚀行为变化，探讨了吸附膜的形成与衰减规律。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。