查询词典 cathodic protection

It is considered that this unusual cathodic behaviour may be due to the adsorption of oxygen which inhibits the reduction of cupric ions.

这是因为在一定的电位区间内，氧的吸附阻滞了铜离子按原来的速度还原，使曲线出现了这种弯曲。

Based on these results, the factors and kinetics of solar energy photoelectrocatalytic degradation of model pollulants, the cathodic behavior and its dependence on anodic reactions, have been studied in detail.It was demonstrated that metal silver and hydrogen peroxide can be generated, respectively,in the cathode during photoelectrocatalytic degradation of organics in the anode, and that photoanodic reaction is the rate-determing step in the system.

在此基础上查明了太阳能光电催化降解污染物体系的影响因素和动力学规律，阴极反应行为及与阳极反应的相互关系，实现了阳极光电催化降解污染物的同时，阴极分别回收金属银和产生过氧化氢，证明了光电催化反应时，阳极氧化反应是速率控制步骤。

A new analytical system has been developed for the determination of total gaseous selenium content in the atmosphere by honeycomb denuder collection followed by measurement with differential pulse cathodic stripping voltammetry.

建立了一种新型的用于检测大气中气态硒的分析系统，即蜂窝状扩散管采集微分脉冲阴极溶出伏安法系统。

Results indicated that the corrosion belonged in cathodic oxygen depolarization corrosion ,just like that of carbon steel-stainless steel couple .

结果表明，该腐蚀属阴极氧去极化型腐蚀，与不锈钢-碳钢短路体系的腐蚀行为非常相似。

The results show that, by the increment of the cathodic current density,the alloy electrodeposit was formed in displacemental solid solution, and that, with W content raised,lattice parameter expanded,and lattice distortion increased, whereas grain size decreased. All the morphologies of the deposits were presented in neat granular structure in the growth of electrocrystallization.

结果表明，随着电流密度的提高，合金沉积层中的W含量增大；形成置换固溶体的合金沉积层晶格参数涨大、晶格畸变度增大、而显微晶粒尺寸减小；合金沉积层的电结晶生长形态均呈现整齐的团粒状生长特征。

The quality problems,influencing factors,quality management and control of cathodic electrodeposition are introduced .

介绍了阴极电泳涂膜的质量问题、影响因素及其质量管理和控制。

The surface charges on cathodic and anodic areas of galvanic couple are much different from those on single metals.

偶合金属阴阳极区表面的过剩电荷与单独金属的表面过剩电荷状态具有显著的差异。

The implanter equipped with intense current, pulsed cathodic arc metal plasma sources which have both strong coating function and gas and metal ion implantation function. Its pulse high voltage power supply can provide big output current. It can acquire very good implantation dose uniformity.

第三代多功能等离子体浸没离子注入装置的强流脉冲阴极弧金属等离子体源既具有强的镀膜功能，同时也具有强的金属离子注入功能；它的脉冲高压电源能输出大的电流；并可获得高的注入剂量均匀性。

The separation of the anodic and cathodic peak potentials is 120mV, which indicates that the process may be an irreversible reaction process.

阴极与刚极电势之间的距离△Ep为120mV，表明配合物与DNA的相互作用过程为不可逆过程。F。

The performance and mechanism of corrosion inhibitions of POCA were studied bymethods such as weight-loss, electrochemistry, EDS, XPS and quantum chemistry. It isfound that POCA is cathodic corrosion inhibitor, having synergistic effect with HEDP andZn~(2+). The P and O atoms of phosphono have important electron density contribution toHOMO orbital and the electron gross orbital population is bigger than 1, so it is easy toform absorbing location between phosphono and metal resulting in good corrosioninhibition on mild steel.

通过利用失重法、电化学方法、扫描电镜、X光电子能谱、X-射线能谱和量子化学方法研究膦酰基羧酸的缓蚀性能及其机理，发现POCA是一种阴极型缓蚀剂，与HEDP、Zn~(2+)具有优良的协同增效作用；POCA分子中的膦酰基基团的P原子和O原子对HOMO轨道电荷密度贡献较大，且其轨道电子布居数均大于1，因此比较容易通过膦基与金属形成吸附位而对碳钢具有良好的缓蚀作用；对铜合金具有一定的腐蚀作用，但腐蚀作用比HEDP等有机膦药剂要小得多，同时与BTA具有优良的相容性，添加1mg／L的BTA则可以有效地防止铜合金的腐蚀。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。