| 释义 |
se·lec·tiv·i·ty 英səˌlek'tɪvəti美səˌlek'tɪvəti COCA²²⁶⁵⁶⁸BNC²³⁶²¹³⁺¹
基本英英搭配近义反义例句例句
n.选择性⁹⁷;选择度³原型selectivity的复数名词复数selectivities
Noun:
the property of being selectiveselective选择的relative selectivity相对选择性effective selectivity有效选择性interionic selectivity离子间选择selectivity index选择性指数variable selectivity可变选择性selectivity characteristic选择性特性selectivity curve选择性曲线selectivity control选择性调整selectivity coefficient选择系数spectrum selectivity频谱选择性overall selectivity总选择性catalyst selectivity催化剂选择性…frequency selectivity频率选择性skirt selectivity边缘选择性selectivity factor选择性因数channel selectivity信道选择性polarization selectivity偏振选择性solvent selectivity溶剂选择性spectral selectivity光谱选择性
近义词 option选择权discernment眼光discrimination歧视
名词100%
用作名词The conclusion proved that,both of them have good flotationselectivity.结果表明，它们对氟碳铈矿均具有良好的浮选选择性。 The aged catalyst could be oxidatively regenerated to fully recover the activity and the product selectivities.
老化催化剂能够经氧化再生完全恢复其活性和产品选择性。 cnki
The angular and wavelength selectivities of band gaps of holographic photonic crystals were calculated using transfer matrix method for different polarizations.
用传输矩阵法计算了一维光子晶体带隙结构对不同偏振态入射光的角度和波长响应。 cnki
The catalytic activities and selectivities of dibutyltin dilaurates for the transesterification of dimethyl carbonate and phenol were studied.
研究了二丁基二月桂酸锡催化碳酸二甲酯和苯酚酯交换反应的活性和选择性。 chemyq
The characters of the technology are high aspect ratio and very high mask selectivities. The technology is applied to micro- machine fabrication.
该技术具有腐蚀深宽比高、掩模选择性好的特点，适用于微机械器件的制作。 cnki
The microwave- assisted technology can tune selectivities via changing reaction temperature for some organic reactions.
微波辅助技术可以通过改变反应温度来实现改变某些反应的选择性。 cnki
The reaction of dimethylsilylene with the compounds containing allyl methyl ether moieties 1—5 gave allyldimethylmethoxy siloxane 6—10 with very good chemo- and regio- selectivities.
二甲基硅烯与含烯丙基甲醚结构的化合物1—5的反应具有良好的化学和区域选择性。 cnki
The selectivities used in the model varies with the temperature and conversion instead of being a constant.
本模型所使用的选择性系数是随温度及转化率而变化的，并非常数。 cnki
At the present time, volume Bragg gratingsVBGs used for DWDM attract widely attention due to their excellent angle and wavelength selectivities.
体布拉格光栅以其优异的波长和角度选择性以及多通道特性，成为目前研究新型波分复用技术的一个热点问题。 cnki
Catalytic nitration of toluene occurs by use of nitric acid in the presence of bentonite metal nitrates with useful para selectivities, up to a para to ortho ratio1.0.
在皂土硝酸盐催化下，甲苯能被浓硝酸对位选择性硝化，对邻硝化产物比率达1．0以上。 chemyq
Change of mole selectivities of alkanes and olefins in products with reaction temperature was investigated.
考察了产物烷烃和烯烃的选择性随反应温度变化的关系。 cnki
Chromium- based catalysts were used to produce1- hexene and1- octene with high selectivities.
铬系催化剂则可以高选择性的合成1-己烯和1-辛烯。 dictall
Extraction process based on chemical complexation can be high in capacities and selectivities for dilute polar organic solution.
络合萃取法对于极性有机物稀溶液的分离具有高效性和高选择性。 cnki
Finally their selectivities were compared by the static adsorption experiments from gentamicin solution containing calcium ion.
最后通过含钙离子庆大霉素溶液的静态吸附实验，比较树脂的选择性。 cnki
It was found that by using this process both C2 selectivities and CH4 conversions were improved simultaneously for OCM reaction, thus solving the problem of lower C2 yield.
研究发现，利用循环-吸附分离反应工艺，可同时提高 OCM反应的 CH4转化率和 C2选择性，解决 C2收率低的问题。 cnki
Stabilities and selectivities of stationary phases prepared by the two methods had been studied and compared.
同时对这两种方法制备的色谱固定相的稳定性和选择性进行了考察和比较。 fabiao
The experimental results also show that pressure is one of the important factors to influence product selectivities of FT synthesis.
实验结果还表明，压力也是影响费托合成产物选择性的重要因素。 cnki
Their separation selectivities are toward alkanes, alcohols, ketones, aromatic compounds, positional isomers and some chiral compounds.
其对烷烃、醇类、酮类、芳香族化合物、位置异构体以及一些手性化合物具有良好的分离效果。 www.cjcu.jlu.edu.cn
Using this catalytic system, the oxidation reactions proceed under mild conditions and give both high conversions and selectivities.
该催化体系催化的烃类分子氧氧化反应具有反应条件温和、选择性高等优点。 jchemindustry
Selectivities of the predicates in a query determine the cardinalitiesnumber of rows at various places in the query execution plan.
查询中谓词的选择性决定了查询执行计划中不同位置的基数行数。 ibm |