离子迁移

The dir ection of calcium ion migration in tooth hard tissue is cementum→dentin→enamel .

牙体硬组织中钙离子的迁移规律为：牙骨质→牙本质→牙釉质。

Another important result is that, which can be easily drown from the figure of probabilities of the states vs pump power with different x, or the common logarithm figure of the populate probabilities vs x , the increasing of the concentration of Er ions increase both energy transfer which populate the state and the cross relaxation process which depopulate the state, but the total result is that ion number of high lying states increase with concentration.

从不同掺杂浓度下各态布居几率或粒子数与光强的变化关系图可以看出，虽然掺杂离子浓度的增大同时增强了产生上转换荧光能态布居的能量迁移上转换过程和消耗该能态布居的交叉驰豫过程，但两者竞争的结果是较高的掺杂浓度对产生高能激发态的粒子数有利。

It relates to not only decarburization in iron melt but also deoxidization and desulphurization in steel liquid.

摘要钢渣反应中氧离子在渣相的迁移，一直是冶金界感兴趣的课题，它关系到铁水的脱碳和钢液的脱氧、脱硫。

In addition, the application of this diffusion and transport model is verified with experimental and engineering data.

经过工程实验验证，证明了改进后的氯离子扩散迁移模型的正确性和合理性。

The mathematical models of the dynamics of the mass transfer based on the Nernst-Planck equation were established from which it is found that the different characteristics of the water decomposition between the cation and the anion exchange membranes or resins, is owing to the different potential gradient on the two kind of ion-exchange interfaces, which is further because of the difference between the structure and performance of the different membranes or resins, and is also because of the difference between transfer numbers of cation and anion ions.

根据所建立的传质数学模型方程获知在阴阳膜／树脂表面与水接触的界面层中发生的水解离的差异性，是在于离子交换界面电势梯度的差异，而这种差异又与膜与树脂的结构、性能以及阴阳离子在水溶液中的迁移数的差异有关。

Model occulted corrosion cell and other electrochemical methods were employed to study the characteristic ofbronze pit corrosion, the effects of dissolved oxygen、 pH and richened migrating of 〓 ion on the developmentof cavity in the simulated electrolyte solution. Corrosion inhibition for chloride ion by1-phenyl-5-mercapto-tetrazole pre-film on bronze has been evaluated. The mechanism of interactionbetween PMTA and the bronze surface has been studied by means of AES and XPS techniques.

采用&模拟闭塞腐蚀电池&等电化学的方法，研究了青铜器粉状锈的孔蚀特征，以及模拟电解质溶液中溶解氧、pH值、氯离子的迁移富集对孔穴生长的影响，评价了1-苯基-5-巯基-四氮唑缓蚀膜抗氯离子腐蚀的性能，利用AES、XPS方法研究了PMTA青铜表面成膜作用的机理。

Compared with the exponent function, the power function can be more suitable for fitting the change of chemicals concentrations in runoff under unsaturated conditions from the loess slope,as well as,the mass loss of potassium and bromine in runoff,but not for initial phase. The study offered a reference for developing the model of soil nutrient in runoff transport of the loess slope.

同时利用两种类型描述径流养分浓度模型对实测资料进行分析，结果显示与指数函数模型相比较，采用幂函数模型能够较好地模拟黄土坡面非饱和条件下径流溶质浓度变化过程，同时幂函数模型也能够较好地描述径流中钾离子和溴离子的质量变化过程，为进一步完善黄土坡面径流养分迁移模拟模型提供了参考。

A novel anion exchange membrane with chitosan and quaternized chitosan has been prepared and the primary structure characterization has been performed by FTIR. The influence of various chitosan/quaternized chitosan compositions and the amounts of glutaraldehyde on properties of ion exchange membranes was discussed. The ion transference number and the selective permeability have been estimate by testing membrane potential method.

制备了一种新型阴离子交换膜－壳聚糖／壳聚糖季铵盐交联共混膜，并用FTIR对共混膜进行了初步表征；分析研究了不同交联度及配比对离子交换膜相关性能的影响；并运用测试膜电位的方法估算了离子的迁移数和选择透过度。

The result shows that to improve the anodic current efficiency, we should decrease the reactions in the anodic solution between dissolving chlorine and transferring sodium hydrate and reduce a series of the reactions between the anode and the cathode.

本论文首先阐述了氯碱工业生产技术发展历史，并介绍离子膜法电解产生、发展过程以及其发展方向，考察了影响电流效率的各种因素，并提出提高电流效率的措施，得出要提高阳极电流效率，就要尽量减少在阳极液中产生的溶解氯与迁移烧碱之间发生的副反应，减少阳极上氧的析出量；要提高碱的电流效率，就要尽量减少氢氧根离子向阳极室的反渗。

The EDX and EPMA analyses on crosssections of anodic films demonstrate that the anodic films on both aluminum alloys contain Al, O and S elements, with evenly distribution across the films.

此外在5056铝合金上的氧化膜中发现存在均匀分布的Mg元素，由此可见在氧化膜的生长过程中，Mg离子同Al离子一样，也在电场的作用下向外迁移。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。