极性的

The unipolar cognitive thinking has a variety of performances such as the cognitive one-sidedness of the subject and the object of moral practice; the unipolarity of morality problem-solving objects; the unipolarity, caused by the sheltered negative impact of multi-cultural values, of moral problem-solving countermeasures; the cognitive unipolarity of the relation between administrators and teachers.

这种认知思维的单极性有种种表现，主要表现为：师德实践主、客体认知的片面性，师德问题解决对象的单极化；多元文化价值消极影响的消除被遮蔽，进而导致师德问题解决对策的单极化；管理者与被管理者之间关系的认知单极化。

The paper focuses on the aspect ual adverbs in Mandarin Chinese,and proves that the aspect ual adverbs in Mandarin Chinese are a kind of PPI,and the distribution of the aspect ual adverbs conforms to the hypothesis proposed by Ginnakidou[1],which says that veridical operator licenses PPI.

本文通过对汉语中的时态副词的研究，证明了时态副词也是一种正极项，并验证了Ginnakidou[1]所提出的真实性算子对极性敏感项的允准的假说同样适用于解释汉语中的正极项的分布。

Abasic review on dielectric nonlinearity and electric tunable mechanism wasperformed in view of thermodynamics, ferroelectric domain, polar nanoregion,field induced phase transition, grain boundary layer and AC dielectricnonlinearity. The dielectric nonlinearity phenomena in barium stannate titanateceramics were studied and the field dependences of dielectric constant and losstangent were showed.

关于低温介电弛豫行为与极性微区关系的讨论涉及到了弛豫铁电体与扩散相变铁电体之间的相容关系，作者认为所有的扩散相变铁电体都应该是弛豫铁电体或潜在的弛豫铁电体，它们的区别仅在于能够观测到介电弛豫现象的测试频率范围不同。

The modified QCM sensors were used to recognize the butylamine isomers in gas. The results showed that the QCM coated with both compounds had preferential affinity to n -butylamine, then i -butylamine, t -butylamine in the range of low concentrations, indicating that in the recognition process, the steric hindrance effect played an important role when forming complex with guest molecules.

修饰的QCM传感器用于识别气相中不同的丁胺异构体，结果发现，在小浓度范围之内上述两种化合物修饰的QCM均优先吸附正丁胺，之后依次为异丁胺和叔丁胺，表明在形成主客体化合物的识别过程中，空间位阻效应是一个重要因素；当分析物浓度增大时，丁胺的极性和磁性成为分子识别的主要因素。

On the basis of examination of more than 2000 specimens from 15 herbaria worldwide, the characters features of species,phonological phase,ecoloigical habit and the relation to close species were analyzed, recorded and described, the disputed species were compared, measured and counted in detail, the quantitative analysis to different characters was done through dot-map, the variation pattern of major morphology characters was analyzed and their significance for a better delimitation of the species was evaluated.

查阅或借阅国内外17个标本馆近2000份标本，描述了每个种的性状特征、物候期、生态习性及其与近缘种的关系，确定性状的极性，对有争议种的形态性状进行详细的测量和比较，用散点图对个别性状作定量研究，分析了主要外部形态学性状的变异式样、变异幅度及其对划定物种范围的价值。

The 3D structure of N protein shows that the domain of Ep703 is exposed on the surface of the protein, making the epitope to be readily recognized by antibody. No homology is found between the mimotopes and native epitope. However, they all contain high content of hydrophile amino acids and low content of hydrophobile amino acids.

蛋白的三维结构显示，Ep703的9个氨基酸多肽暴露于蛋白的表面。3个模拟表位与表位Ep703的序列&IQTAFNQGA&相比，相同的氨基酸很少，但是各表位氨基酸的极性却有一个共同的特征：亲水性氨基酸比例较大，疏水性氨基酸比例较少。

Antecedent trial, SAINT I, and the critical commentary stimulated by it, which called attention to its interpretively challenging primary outcome measure—a shift in the full-scale modified Rankin scale score—and to other statistical shortcomings;(2) the cogency of the STAIR recommendations, to which the development of NXY-059 closely adhered; and (3) the inherent physiochemical shortcomings of NXY-059 as a neuroprotective agent—its polar, nonlipophilic nature, poor blood– brain barrier penetrability, nonphysiological oxidation potential, and low potency.

应注意SAINT I期试验有争议的结局指标以及统计方法的缺陷；（2）NXY-059试验严格遵守STAIR推荐；（3）NXY-059作为神经保护剂固有的生理生化性质的缺陷：该药的极性、非脂溶性、较差的血脑屏障穿透性、无生理性的氧化能力以及低效价。

Blue-light-emitting polyfluorene derivatives with bulky bipolar pendent groups at C-9 position has been synthesized. The combination of electron-deficient oxadiazole and electron-rich triphenylamine affords a highly efficient light-emitting material by improving charge injection and transport in electroluminescent device.

具有刚硬双极性侧链的高效率蓝光聚茀高分子材料已成功被合成，藉由在fluorene的9号碳位置导入了有利於传输电子的oxdiazole片段与利於传输电洞的triphenylamine片段所结合的TPAOXD，不仅增加电荷注入与传输能力，同时提高材料的热稳定性质(Tg： 186 oC)。

The working principle of a novel short st roke linear DC motor wit h permanent magnet s is presented. Mixed digital - analog cont rol approach based on DSP ( TMS320L F2407A) is proposed. Displacement detecting and cont rol technique are discussed. Displacement detecting circuit s , digital - to - analog converter (DAC7641) expanded circuit s and cont rol software are given.

阐述了一种新研制的短行程永磁直流直线电机的工作原理，提出了基于DSP ( TMS320L F2407A)的短行程直流直线电机数、模混合伺服控制系统方案，重点对直线电机的位置检测及控制技术进行了研究，给出了DSP 控制器的位置检测接口电路、16 位双极性数模转换器(DAC7641)的扩展电路和控制软件的实现方法。

As to the high polarity, high boiling point resultant—trimesic acid, the analysis methods of infrared spetrum, gas chromatography-mass spectroscopy, vapour-phase chromatography, acid number titration and so on are seperately used to characterize its property. Infrared spetrum and gas chromatography-mass spectroscopy are used to have a qualitative analysis on the resultant and are compared with the stand diagram. Sulfuric acid-methanol esterification and rapid esterification are used to prepare the trimesic acid trimethyl-ester and have a FID quantitative analysis. So that we make sure the purity of trimesic acid in the resultant and also we have an acid alkali titration on the resultant to get its acid number, in order to verify the purity of trimesic acid in the resultant.

对于高极性、高沸点的固体产物均苯三甲酸，分别采用红外光谱、气质联用、气相色谱、酸值滴定等分析手段进行了表征：利用红外光谱、气质联用的方法进行产物的定性分析，并与在同一仪器、同一条件下做出的标准谱图进行比对；采用硫酸-甲醇酯化法和快速酯化法制备出均苯三甲酸三甲酯，对其进行气相色谱FID定量分析，进而确定固体产物中均苯三甲酸的纯度；用酸碱滴定法确定固体产物的酸值，以对固体产物中均苯三甲酸的纯度进行验证。

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。