查询词典 selectivity

The employment quality includes the equal opportunity, stability and selectivity, security of place, indemnificatory of salary and risks, harmonious labor relation, and so on. By analyzing different factors to expatiate its economic and social function.

本文认为就业质量包括就业机会平等性、岗位工作的稳定性和可选择性、工作场所的安全性、劳动薪酬收入和劳动风险的保障性以及劳动关系的和谐性等，通过分析就业质量的不同方面来更好的阐述就业质量的经济社会功能。

Water and template were removed from intercrystalline pores at lower temperature, which had lower ideal selectivity and lower concentration.

对膜在不同的焙烧温度下，单组份气体N2、H2、n-C4H10、i-C4H10的渗透通量进行了测量，结果表明在焙烧过程中，膜内主要有两种不同的孔产生，低温下晶间孔内的水份和模板剂首先逸出，这些孔对气体的选择性不大，但它们所占比例也不大。

Multi-sensor information fusion technology is studied and used to settle intersectant sensitivity problems among the six gases when sensors of MQ series are used in system. The technology of sensor array and the method of NN model identification can enhance the detecting accuracy and reduce the requirement of selectivity and time stability.

4研究多传感器信息融合技术防止MQ型系列传感器对六种气体存在的交叉敏感的原理及方法，采用传感器的阵列技术，利用BP神经网络模式识别方法，有效提高对单一气体类别及混合气体组分浓度的检测精度，降低对气体传感器本身选择性及时间稳定性的要求。

In part Ⅱ, the effects of intracortical excitatory and inhibitory circuitries on the orientation selectivity were studied using the in vivo whole cell recording technique.

第二部分用上述在体胞内记录技术研究了视皮层内兴奋性和抑制性回路在方位调谐加工中的作用。

By comparing the tuning width of the input and output tuning curves, it is shown that the orientation selectivity is sharpened after being processed by the intracortical connection.

为了阐明这种锐化作用的机制，我们进一步分析了视皮层神经元的调制传递函数，观察到在输入和输出信号之间，存在着一种指数函数关系。

By comparing the tuning width of the input and output tuning curves, it is shown that the orientation selectivity is sharpened after being processed by the intracortical connection.

将同一神经元的输入和输出曲线进行比较可以看出，经过视皮层内神经回路加工以后，方位调谐曲线的宽度变窄，调谐特性被明显地锐化。

Palladium loadings of 1.39%, 3.0%, and 5.85% showed high activity and selectivity in the Heck coupling of iodobenzene with styrene (conversions of 76-84%, selectivities of 84-87%) and methyl acrylate (89-100% conversions and 100% selectivities).

钯全部1.39%、3.0%、和5.85%的表现高活性、选择性与苯乙烯啥米耦合碘(1976年至1984年改建成选择性84-87%)和甲基丙烯酸(89-100转换成选择性和100%)。

The results indicate that little conversion of iodobenzene was observed on unmodified carrier supported catalysts; and a conversion of 100% and a selectivity of above 98% to trans-isomers were found over 10%Cu/5%KF/ZnO, 20%Cu/10%KF/ZnO.

结果表明，对碘苯与丙烯酸正丁酯的Heck反应的催化性能，未改性催化剂基本没有活性，而改性后，10%Cu/5%KF/ZnO、20%Cu/10%KF/ZnO催化剂的催化转化率为100%和反式异构体的选择性为98%以上。

Result shows that the sulfur compounds in the diesel can react with iodomethane easily at room temperature, the most of sulfur compound derived into methylsulfonium salts; the homologue of benzothiophene get the higher conversion ratio and react selectivity than the homologue of dibenzothiophene. It is found that primarily sterically hindered alkylated DBT, for example, 4-or 4-, 6-DBT, is recalcitrant to be methylated.

结果表明：柴油中硫化物在室温条件下容易与碘甲烷发生甲基化反应，大部分硫化物转化为锍盐，总转化率超过80%，苯并噻吩类比二苯并噻吩类更易发生甲基衍生化反应，转化率也相应较高。

The catalyst had high activity and high selectivity in esterification of phthalic anhydride with isoamyl alcohol.

该催化剂对邻苯二甲酸酐和异戊醇的酯化活性高，无副反应。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。