查询词典 selectivity

Packed bed electrodes can reach higher current densities at relatively low electrode polarizations,which is favorable to mitigating the inconsistency between reaction rate and selectivity.

填充床电极具有大的内表面，能在相对低的极化下，达到较高的表观电流密度，有利于缓解反应速率和选择性之间的突出矛盾。

When the molar ratio of H2O2 to benzyl alcohol was 0.9, the conversion of benzyl alcohol was 86.2%, the H2O2 efficiency was 95.8% and the selectivity to benzaldehyde was not less than 99%.

当H2O2与苯甲醇的物质的量比为0.9时，苯甲醇的转化率为86.2%，H2O2的利用率为95.8%，苯甲醛的选择性≥99%。

The conversion of benzyl alcohol and the selectivity of benzyl aldehyde reached to 63.2% and 89.1%, respectively, after catalyst was used for four times.

催化剂重复使用4次后，苯甲醇的转化率和苯甲醛的选择性分别为63.2%、89.1%。

With Ti(30)/W(400)-HMS as catalyst, at n:n=1:2,ω=4%, and the reaction time 5 h, the conversion of benzyl alcohol and the selectivity of benzyl aldehyde reached to 72.6% and 96.9%, respectively.

利用Ti(30)/W(400)-HMS为催化剂，当n：n(H2O2)=1：2、ω=4%、反应时间为5 h时，苯甲醇的转化率和苯甲醛的选择性分别为72.6%、96.9%。

According to the strong reducibility of lithium aluminium hydride and asymmetric selectivity of binaphthol,the authors reduce camphor into D-borneol by using D-binaphthol modified lithium aluminium hydride as chiral reagent.

根据氢化铝锂的强还原性和联萘酚的不对称选择性，用右旋联萘酚改性过的氢化铝锂为手性试剂，把樟脑还原成右旋龙脑。

Compared with the MgO prepared by direct thermal decomposition of the MgO precursor, the novel high-specific-surface-area MgO material contains more strong basic sites and less acidic sites and exhibited higher acetone yield and selectivity in isopropanol decomposition, making it a potential solid base catalyst.

与直接焙烧四水乙酸镁制得的MgO相比，这类新型高比表面积MgO具有较多的强碱位和较少的酸性位，并在异丙醇催化分解反应中表现出更高的丙酮收率和选择性，有望成为一类优良的固体碱催化剂。

The fault phase and the ground fault generator with the current difference larger than its threshold are thus detected,and the selectivity protection scheme is also presented.

目前国内外已开发的发电机定子接地保护有零序基波电压和三次谐波电压构成的100%定子接地保护、外加电源式定子接地保护等[3~6]。

Could keep above 95% in the fixed beds. In order to achieve high stereo-selectivity with yeast, ethyl acetoacetate was used as the model substrate,and a novel approach was proposed to selectively inhibit R-enzymes in yeast before reaction.

以乙酰乙酸乙酯为模型底物，以丙烯酸、乙醚、二甲基亚砜、丙烯酰胺、正己烷等有机溶剂选择性地抑制酵母中R型酶，提高反应立体选择性。

For the high selectivity and safety of chitin synthase inhibitors ,they are used for insecticides,fungicides and acaricides.

几丁质合成酶抑制剂由于具有安全、高效等特点，成为农用杀虫、杀螨、杀菌剂以及医药抗真菌药物的研发热点。

The process of alkanes transport into cells and the effect of transport selectivity on priority of different alkanes in hiodegradation were studied.

研究了烃的跨膜传输过程以及该过程的选择性对细菌降解偏好性的影响。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。