离子迁移

Has weak activation and transfer under acid rain effect and redeposition will take place during the course of their moving from surface soil to deep soil.

酸雨作用下离子的迁移过程客观存在，这一点从土壤电导率研究结果中得到了确认。

The results have shown that P-RE-USY has good hydrothermal stability owing to the migration of hydroxy rare earth cation from the super cages to the sodalite cages enhanced by phosphorus addition, inhibiting the frame...

结果表明，由于磷促进了稀土离子由超笼向方钠石笼中的迁移，阻止了沸石在水热条件下的脱铝作用，从而改善了P RE USY沸石的水热稳定性；P RE USY沸石酸性分布更集中在中强酸范围，有利于发生氢转移反应，而强酸数量的降低有利于减少焦炭形成，改善了焦炭选择性。

The peaks intensity of Zr-MCM-41 mesoporous molecular sieves had a tendency to weak and the catalytic activities of them as catalysts in catalizing octadecanol to corresponding octadecanoic acid decreased with addition of zirconium ions.

水热环境下可加速反应物质的迁移运动，氨水缓慢释放OH-离子，促进了TEOS水解、缩聚反应及有机-无机组装过程更好地进行。

The oxide ionic conductivity was increased with the increase of temperature, but the protonic conductivity displayed a maximum at 900 ℃, due to the combined increase in mobility and depletion of the carriers. The fuel cell could work stably.

氧离子电导率随着温度的升高而增大，而质子电导率在约900℃时出现最大值，这是由于在陶瓷中质子迁移率的增大及质子浓度的降低共同影响的结果。

Objective:To study the caracteristics of Ca2+ movement during the remineralization.

目的：探讨钙离子在牙体硬组织中的迁移规律。

The association defect formed by donor and acceptor was the obstacle of the electromigration of the Oxygen vacancy and the electron. The valence variation of MnO〓 during the sintering and reoxidation process can improve the insulation resistance effectively.

要发挥MgO受主掺杂的作用，同时要避免氧空位的增加。Y〓和Dy〓作为两性离子掺杂，减少了氧空位，产生的施主和受主相互缔合，成为氧空位和电子迁移的障碍。

It is suggested that the tin species promote the formation of a network as for tin oxide xerogel, through which copper ions and anions migrate.

这告诉我们，锡物质能促进像氧化锡干凝胶那样的网络的形成，铜离子和阴离子就通过它迁移。

In EDI, the transfer of the ions in the depleting stream is controlled by film-diffusion .

EDI过程中，离子的迁移受膜扩散机理控制。

With a peak-peak of rectangular asymmetric waveform voltage up to 1 600 V, a frequency of 195.8 kHz, a duty cycle of 30% and a compenstaion voltage of-8.63 V, the acetone displacement is compensated and the sensor ability to separate ions is demonstrated by an experiment using the planar copper drift tube.

当方波非对称射频电压峰峰值为1 600 V，频率为195.8 kHz，占空比为30%，补偿电压为-8.63 V时，采用平板铜块迁移区实现了丙酮离子的位移补偿，实验结果验证了传感器的性能。

Sn-3Ag-XCu(X=0.0~0.9) solders were reflowed on two copper pads, between/which 2-3VDC voltage was employed to investigate the electrochemical migration in deionized water.

Sn-3Ag-XCu(X=0.0~0.9)回焊於两铜垫上，完全浸泡於去离子水中做为阴阳两极，两极间施以2V~3V直流偏压，研究其电化学迁移现象。

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。