选择性的

This study was aimed to examine the relationship between dendrites of direction-selective ganglion cell and processes of starburst amacrine cell in rabbit retina and to see how the dendritic interaction could contribute to the DS mechanism.

本实验的目的是研究家兔视网膜方向选择性神经节细胞的树突与星爆无长突细胞树突之间的关系以及这种树突间的相互作用在方向选择性产生机制中的贡献。

The content of Ni〓 in the reduced catalysts and the amount of dialkylmethylamine as main by-product in the amination products were closely related.

将催化剂的还原性能和催化剂进行胺化评价反应的选择性数据进行关联，发现催化剂的选择性和CuO的还原性能无关，而和NiO的还原程度密切相关。

The results of the reaction show that better regioselectivity is obtained when Cd2+ is used as additive and give stereoselective product when cinchonine is used as chiral additive.Keywords: NaBH4, Regioselective,Stereoselective,Benzoyl acetone,Metal ion

结果发现，不同的金属离子添加剂使反应出现不同的化学选择性，而Cd2+离子对苯甲酰丙酮的还原具有较好的化学选择性，同时在辛可宁存在条件下得到了对映体过量的产物。

In the titration experiment of NMR and IR spectroscopy, we can understand how sensors binding with metal ions: the two carbonyl group and crown ether group cooperated in binding with metal ions. Furthermore, by altering the "oxygen" atoms of crown ether to "sulfur", we can change the binding affinity to the soft metal: cupper. It shows 60-fold enhancement of fluorescence.

在化合物2中，我们引进了硫原子在冠状醚中，则应对电子密度较低之金属有较好的结合能力，实验结果显示了此分子对铜离子有相当好的选择性和结合能力，萤光增加可达60倍；同时由红外光吸收光谱和核磁共振光谱滴定实验可确知，香豆素衍生物上的两个羰基对金属离子的选择性及结合上扮演相当重要的角色。

Following such study clue, I gradually introduced the factors that should be taken into account in discretionary disclosure and integrated all the theories in a frame. Firstly, I introduced the concept of "proprietary cost" and analyzed the level and strategies of disclosure which were taken by firms.

本文按照逐步引入影响因素的方法将现有的理论串成一线：首先引入"专有性成本"这一因素，分析了专有性成本理论框架下公司选择性披露水平及决策问题；在此基础上，引入了产品市场竞争因素，分析了不同产品市场竞争环境下公司的选择性披露决策；接着，笔者又将金融市场竞争因素引入，解释了为什么上市公司事实上并非完全遵循产品市场竞争环境下的披露策略，而会出现披露的"羊群行为"。

The yields of furfural derivatives both in water and in methanol reach the maxima in the vicinities of the critical pressures.

停留时间越长，葡萄糖在超临界水和甲醇中的转化率越高，HMF的收率和选择性越低，而MMF的最大收率和最高选择性却存在着一个适宜的停留时间。

Five types of foraging habitats of Black-necked Cranes, i.

黑颈鹤对莎草草甸的选择性最高，对玉米地的选择性最差，对其余类型栖息地的选择随地点的不同而不同。

Meanwhile, process of memory, environmental effect, start of transmission– importance of attitude, optional attention and optional understanding are acceptors'psychological factors.

同时，记忆的过程、环境效应、传播的起点——态度的重要性、选择性注意以及选择性理解是影响广告效果的受众心理因素。

In the selective oxidations, Manganese porphyrin mimic enzyme systems supported on different inorganic supports are designed and developed, which are applied in studies of green processes, such as, the selective olefin epoxidation with oxygen in either ionic liquid or water, the oxidation of alcohols.

在选择性氧化反应中，设计制备了不同无机载体的锰卟啉模拟酶体系，分别在离子液选择性和水相中开展了以氧气为氧源的烯烃环氧化、醇的氧化等绿色反应过程的研究。

The results showed that the mixed-addenda heteropolyacids H6PM o9V3O40,H10PMo5V7O40and H11PMo4V8O40 c an improve the conversion of 2-octanol,selectivity for hexanoic acid and the r ate of production.When the amounts of heteropoly acid are 14%,10%and 14% of the weight of 2-octanol,co...

结果表明：H6PMo9V3O40、H10PMo5V7O40、H11PMo4V8O40等多元杂多酸均可提高仲辛醇的转化率、己酸产率和己酸选择性，并确定了这3种催化剂的最佳用量：当它们分别为仲辛醇质量的1 4%、1 0%、1 4%时，仲辛醇转化率可达98 3%、97 6%、100%；己酸的选择性可达85 7%、85 8%、78 8%；其性能明显优于钒催化剂。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷