选择反应

Catalysts of this invention, applied in the reaction of selective oxidation of carbon monoxide to carbon oxide from hydrogen－rich gas mixtures, exhibited highly catalytic activity and excellent selectivity.

本发明之触媒应用在由富氢气体混合物中将一氧化碳选择性氧化成为二氧化碳反应中，显现出高催化活性及优越的选择率。

The experimental results show that high conversion ratio of iron carbide could be obtained using reducing gas with suitable ratio of H〓/CO at 973K and 1073K.

试验结果表明在973K、1073K下反应时，选择合适H〓／CO比例的反应气体能得到较高碳化铁转化率，而1173K下未能得到。

G.H.Parker reasoned that if for example a flatfishs left eye migrated when the right optic nerve was on top there would be a twisting of nerves,which might be mechanically disadvantageous.For starry flouders,then,the left-eyed variety would be selected against,since in a starry flouder the left optic nerve is uppermost.G.H.

那么，对于星蝶比目鱼来说，由于左视觉神经在最上端，左眼品种就不会被选择。against 读到这个词，第一反应容易理解为介词，但后面没有介宾成分，实际是副词，要注意此词的副词用法。

Compared with the ordinary Na2O-CaO-SiO2 glass, the relationship of the glass ceramic composition and the meltingtemperature with the corrosion degree of the various refractories is discussed in detail. The microstructure and characteristics of each kind of refractorys matrice and keacting layer are analysized and a great amount of optical microphotographs are obtained, which may provide reliable theory basis to manufacture the glass ceramic.

本文运用多种有效的材料测试手段，对比Na_2O-CaO-SiO_2普通玻璃深入研究了CAS系统微晶玻璃溶液对不同池壁耐火材料的侵蚀机理，探讨了CAS系统微晶玻璃组分、熔制温度和耐火材料受侵蚀程度之间的相互规律，同时详细分析、评价了每种耐火材料基体和界面反应层的显微结构及其变化特征，为CAS系统微晶玻璃生产厂家选择合适的耐火材料及熔化工艺制度提供了可靠的理论依据。

Sara Mednick, from the University of California, San Diego, suggests that non-habitual nappers suffer from this more often than those who siesta regularly.

这可能是由于那些醒来容易头脑晕沉的人，因为有这种反应，首先就不会选择午睡。

A special route-choosing behavior of trippers is discussed and the definition of Lingering Response Information is defined in the paper.

对行驶者的一种特殊的路径选择行为进行研究，提出了延迟反应信息及其影响区的定义。

BY taking trippers' chooses on LRI into analysis, the traditional multi-path traffic assignment method is improved.

通过分析延迟反应信息影响下行驶者出行路径选择规律，对传统多路径交通分配方法进行了修正。

The new equation is suitable for studying fusion reactions with any projectile-target combination, and can better fit the experimental data, so that it can provide a large probability to choose the reaction system for synthesizing a certain superheavy nucleus.

新的方法适用于研究任何弹靶组合系统，给出了与实验符合更好的结果，为寻求合成超重核的反应道提供了更为宽阔的选择空间。

Methods: Forty-three indiviuals who were exposed to arsenic more than 0.05mg/L in well water were chosen and the vein blood and morning urine was collected; The MTHFR C677 polymorphism was analyzed by PCR-RFLP method; Urinary inorganic and methylated arsenic were speciated by high performance liquid chromatography combined with hydride-generation atomic fluorescence spectrometry; Microbiological assay was used to estimate serum folate.

在砷中毒流行区选择饮水史清楚、饮水砷含量高于0.05mg/L的43名居民，采集空腹静脉血并收集晨尿，以聚合酶链反应－限制性长度多态性方法分析MTHFR基因C677T位点多态性，采用高效液相色谱－氢化物发生－原子荧光法检测尿中各种形态的砷，采用微生物法测定血清中叶酸水平。

Methods: The sonograms of 33 malignant lymphoma cases with 45 superficial lymph nodes were reviewed and compared with 40 cases with 43 benign reactive hypertrophic ones.

回顾性分析33例恶性淋巴瘤患者45个受累浅表肿大淋巴结声像图，并选择40例患者43个良性反应性增生肿大淋巴结做对比。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。