Oxidation of magnetite grains is divided into tow stages, according to temperature, and iron ion diffuses at lower temperature and diffusion amount of oxygenic ion increases at higher temperature.
磁铁矿颗粒氧化按温度划分为两段，在较低温度下主要是铁离子扩散，较高温度下氧离子扩散的扩散能力增强。
The calculation of chloride diffusion coefficient in prestressed concrete structures eroded by chloride ion is discussed.
针对氯盐侵蚀的预应力混凝土结构，讨论了氯离子扩散系数的计算。
The results show that no matter the range of the implanted ion itself or secondary effect sphere of secondary electrons, radical diffusion, thermal spike, cascade atoms and shock wave etc.
结果表明：无论是注入离子本身的射程，还是次级电子、自由基扩散、高温热穗、级联原子和冲击波等次级作用范围都无法触及表皮下面的胚细胞。
The determination of material structure, performance parameters and membrane resistance, membrane diffusion coefficient of the F4112 ion exchange membrane were introduced.
介绍了F4112离子交换膜的材料结构、性能参数及膜电阻、膜中扩散系数的测定方法。
Based on experiments, the diffusion mechanism and influential factor of selective uranium separation and acids recovery with ion exchange diffusion dialysis membranes are introduced.
通过初步试验，探讨了用离子交换扩散渗析膜有选择性地回收酸分离铀的机理及影响因素。
The results show that oxidizing mechanism of the heater tube is mainly diffusion of metal ion passing through oxide and its reaction at the oxide-gases boundary.
结果表明，炉管的氧化机理主要是金属离子穿过氧化物层的扩散并在氧化物—气体界面发生反应。
The mixture ratio of C40 Marine high performance concrete is optimized through test of the hydration heat of binding material, slump, chloride ion diffusion coefficient, anti-crack rand of concrete.
通过测试胶凝材料水化热、混凝土的坍落度和氯离子扩散系数、抗裂等级等性能，对C40海工混凝土的配合比进行了优化设计。
Phase transition, enhanced diffusion and Y-Al alloy formation are studied using Y implantation with high current extracted from metal vapor vacuum arc (MEVVA) ion source.
利用金属蒸汽真空弧（MEVVA）源所产生的强束流离子注入铝研究了相变、增强扩散和钇铝合金的形成条件。
Permeability of concrete and its correlation with chloride ion diffusion coefficient under different test conditions including water pressure method and tension method are studied.
本课题主要研究混凝土在水压法及张力法试验条件下水在混凝土中的渗透行为以及同氯离子扩散系数相关性。
The minimum magnetic field intensity needed to induce significant effect on cathodic limiting diffusion current density decreased with increasing ferric ion concentration.
引起极限扩散电流密度明显增加的临界磁场强度随三价铁离子浓度增加而减小。
The solution the rise of temperature diffusion speed up, reduce can strong difference, in addition, temperature polarization still can make ion dehydration process of speed up.
镀液温度的升高能扩散加快﹐降低浓差极化﹐此外﹐升温还能使离子的脱水过程加快。
An experimental study has been carried out on the doping of polysilicon by ion implantation and diffusion for the preparation of shallow junctions.
本文对多晶硅膜离子注入掺杂和扩散掺杂制备浅发射结进行了实验研究。
A few methods are introduced at home and abroad on producing PIN diodes: diffusion, ion implantation, and epitaxial.
国内外制备PIN二极管主要采用离子注入方法，扩散方法，外延方法。
Stained quartz glass for filters has been made by ion diffusion under high-tension electric field. The equipment and process are described.
利用高压电场离子扩散法试制滤光石英玻璃，介绍了该法的装置与工艺。
The kinetic mechanism for the behaviour of membrane conductance was given according to the ion diffusion in the membrane and the charging process in the equivalent circuit.
膜电导的上述行为可用离子在膜中的扩散解释，还可用电荷对电极等效线路的充电解释。
In the study of thin-film conductors, ion diffusion is an important phenomenon as electrodiffusion degradation can lead to metallization failure.
在薄层导体的研究中，粒子的扩散是一类重要的现象，由于电扩散的降解能导致金属的毁坏。
Diffusion of anolyte containing ferric ion into the cathode compartment is avoided by maintaining a small hydrostatic head of the mixed solution in the diaphragm-bag.
通过维持隔膜袋里混合溶液小的静压头，避免含有三价铁离子的阳极液扩散进入阴极室。
The boundary layer is characterized by a concentration gradient of the oxidized ion. Diffusion of the reducing agent ion through the boundary layer controls the REDOX reaction.
边界层的特征在于被氧化离子的浓度梯度，还原剂离子的扩散通过边界层控制了氧化还原反应。
Cathodic reaction rate at open circuit Potential for iron in sulfuric acid containing dichromate ion was controlled by both electron transfer process and diffusion process.
铁在含有一定浓度重铬酸根的硫酸中，自腐蚀状态下的阴极反应速率受重铬酸根阴极还原电子转移过程与扩散过程共同控制。
Meanwhile, the removal of the free sulfur from the chalcopyrite will facilitate the ion diffusion and the further oxidative solution of chalcopyrite.
同时，清除黄铜矿表面氧化溶解产物——单体硫后，有助于离子扩散和黄铜矿的进一步氧化溶解。
The results indicate that this ion exchange process is controlled by particle diffusion;
结果表明，该离子交换过程近似符合颗粒扩散控制；
Through a great deal of experiments, the durability of HPC with artificial sand are studied systematically. Impermeability, freezing resistance and chloride ion diffusion are tested.
通过大量试验，系统研究了人工砂高性能混凝土的耐久性，对抗渗性、抗冻性、氯离子扩散系数等项目进行了测试。
The ambipolar electric field is important and the ambipolar diffusion flux is of the same order of the ion diffusion level.
此时，存在明显的双极电场，而双极扩散流基本上是离子扩散的量级。
Therefore, the separation degree between the anodic and cathodic peak potentials in the CV curves can be used to analyze the ion diffusion in three dimensional film electrodes.
因此循环伏安图阴阳极峰电位的分离程度可用于三维膜电极内离子扩散的分析。
The mechanism of particle diffusion control for ion exchange process was determined by indirect judgment method.
通过间接判断法，确定离子交换过程为颗粒扩散控制过程。
Recently, the research of the dependence of ion movement on ion diffusion and carrier gas velocity distribution in high strength electric field has achieved preliminary results.
目前国内外对高电场中离子扩散、载气流速分布对离子运动行为的影响进行了大量的研究，取得了一定的研究成果。
The life prediction model under chloride ion environment was set up in considering differences in space and time-dependent of the chloride ion diffusion coefficient.
建立了考虑氯离子扩散系数空间差异性和时间依赖性的基于可靠度的寿命预测模型。
The life prediction model under chloride ion environment was set up in considering differences in space and time-dependent of the chloride ion diffusion coefficient.
建立了考虑氯离子扩散系数空间差异性和时间依赖性的基于可靠度的寿命预测模型。
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