查询词典 selective

The mechanism of electrocatalytic reduction, the classification and selection of electrode and catalyst and the effect of temperature, current density and pressure on the selective and Faradaic efficiency of reduction are discussed.

介绍了在水溶性介质中利用电化学催化的方法还原CO2的研究现状：电催化还原机理、电极材料催化剂的分类和选择；综述了温度、电流密度以及压力等对还原选择性和法拉第效率的影响；展望了CO2电催化还原方法的研究方向和应用前景。

In this paper,the electrochemical reduction of CO2 by various metal electrodes in aqueous solution,organic solvent and molten salt media is reviewed,which includes reaction activity and mechanism of every kind of metal electrodes. The effect of electrode,temperature,pressure,electrode potential and electrolyte on the selective and Faradaic e...

综述了金属电极在水溶液、有机溶剂以及熔融体中电还原CO2的研究现况，包括各类金属在电还原CO2过程中所表现出的反应活性以及生成相应产物的反应机理；介绍了电极、温度、压力、电极电位和电解质等因素对金属电极电还原选择性及法拉第电流效率的影响；展望了CO2电还原的未来研究方向及应用前景。

The results showed that the shape selective effect of the faujasite is obvious, and the thermodynamic balance exists between 2,6 DTBN and 2,7 DTBN.

结果表明，八面沸石对该反应过程有较好的择形催化作用，两种异构化产物(2 ，6 二叔丁基萘和 2 ，7 二叔丁基萘)之间存在着热力学平衡，即两种异构化产物可在酸性中心位上相互转化。

4Complications:After operation peritonitis appeared in 5cases,among which were 2of intestinal obstruction,and 1 necrosis of left hemicolon.Conclusion:The chemotherapy of selective arterial drug perfusion before an operation reduce the tumor and stiumulate inflammatory reaction and fibroplastic proliferation around it.Thus increases excision rate as well as decreases local recurrence rate and possiblity of cancer merastasis.However,it also leads to some toxic side reaction and possible intestinal obstruction and necrosis.

于直肠癌手术切除前先行选择性动脉药物灌注化疗，可使肿瘤缩小，并刺激瘤周炎性反应和纤维组织增生，从而提高手术切除率，降低术后局部复发和远处转移可能，该方法有一定的毒副反应和发生肠梗阻、肠坏死的潜在危险。

Moreover, the A-B-A triblock copolymer solution in a selective solvent, which is good for the block B, was explored. It was observed that the flowerlike micelles were formed, in which the central block B took on a loop conformation and the two end A blocks became a part of the micellar core. It was found that some of the soluble middle B blocks served as extended bridges between the small clusters by the poorly solvated end A blocks.

在A-B-A三嵌段共聚物溶液体系中，溶剂是链段B的良溶剂，是链段A的不良溶剂，此时我们得到了花型结构的胶束，其中花心是由链段A聚集而成，花瓣是由链段B形成的，而且在体系中也发现了有些胶束间存在着桥，并且在浓度很高时，体系出现了凝胶现象。

In this thesis, we demonstrate that elastin is one of major origins of the THG contrast under Cr:forsterite laser excitation operating at 1230nm, with selective visualization inside many tissues such as lung tissues and arteries.

在这篇论文中，在使用中心波长为1230nm的铬贵橄榄石雷射光源激发之下，证实了弹性蛋白是三倍频的主要来源之ㄧ，且在许多生物体中如肺组织和血管中有著选择性的影像。

This is largely consistent with the hypothesis that friction reduction and dirt shedding are the main selective pressures on microornamentation, given that reducing shine is not of key importance in fossorial animals.

考虑到穴居种类减少反光不是主要的选择因子，而主要选择是减少摩擦和清除污物，显微皮纹特征很好的符合这一假说。

This is largely consistent with the hypothesis that friction reduction and dirt shedding are the main selective pressures on microornamentation, given that reducing shine is not of key importance in fossorial animals.

考虑到穴居种类减少反光不是主要的选择因子，而主要选择是减少摩擦和清除污物，显微皮纹特征很好地符合这一假说。

This means that, in most cases, only a very small part of an object will lie within this area. If we want to observe the object in detail, we have to move the fixation point frequently to make the different parts of the object lie within the central area. In addition, with such a small central area, the separation of foveal and peripheral channel becomes meaningless. Consider all the above aspects, we propose in this thesis a visual computing model based on selective attention mechanism.

针对上述问题，本文的模型引入选择注意机制，并将之建立在非均匀采样表示与处理的基础上，我们提出了一种可以随视觉任务变化的可变结构的非均匀采样信息表示方法，并通过它将后继的视觉处理分成相对独立的中央和周边通道，分别完成对感兴趣物体的识别和注意点的快速转移，后者相当于对感兴趣物体的一个粗定位过程。

Selective catalytic oxidation of propane has been a problem from the industrial point ofview because it is less expensive but difficult to functionalize.

丙烷作为重要的小分子烷烃，将其选择氧化制丙烯酸是一条很有前途的路线。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。