极化

Experimental result shows that when the incident is vertically polarized, the head direction RCS average's variation along the relative curvature is of "W" shape and has 2 minimum values; when horizontally polarized, the head direction RCS average's variation is different in two bend fashions.

实验结果表明，垂直极化下头向雷达散射截面均值随弯度呈"W"形变化，有两个极小值；水平极化下两种弯折方式头向雷达散射截面均值变化趋势差异较大，上下弯折时呈"W"形变化，水平弯折时单调降低。

The results showed that relative permittivity of PLZST/PVDF composite with mass ratio of 3:1 could increase from 47.7 to 56.0 after polarized at 110℃ for half hour by electric field of 15kV/mm.

结果表明：质量比3：1的PLZST/PVDF复合材料在110℃，极化电压为15kV/mm的条件下极化0.5h，可使其相对介电常数从47.7增大到56.0。

The reflection of the LO mode, RLO, and its ratio, RLO/RTO, with the reflection RTO of the LO mode increase with increasing angle of incidence. In the case of the polarized incident light,ωLO is a function of angle of incidence and polarization state of the incident.

在45°入射角附近，ωLO几乎与入射光的偏振方向无关；在这个临近角45°两侧，ωLO和入射光的偏振方向的关系呈现相反趋势：当入射角小于45°，ωLO随着入射光极化仰角θ的增大而减小，当入射角大于45°，ωLO随着极化仰角θ的增大而增大。

Keywords polarization;polarimetric SAR;classification;projection index;wavelet-kernel estimation;Bootstrap estimation;sequential projection pursuit cluster model;projection pursuit wavelet learning network;mix

Article From 西北工业大学；计算机科学与技术博士论文 2007年度极化；极化合成孔径雷达；分类；投影指标；小波估计； Bootstrap估计；序列投影寻踪聚类模型；投影寻踪子波学习网络；混合Wishart模型

Based on Wagner polarization principle, the reversible electrode and the clogged electrode were applied to polarize the silver bromide tabular grain emulsion micro-crystals in direct current field.

根据Wanger直流极化法原理，采用可逆电极与阻塞电极并用的方法，对溴化银 T颗粒乳剂微晶体在直流电场中进行极化，当离子电流为零时测得其电子电导率和空穴电导率。

The stealth warplane for the microwave radar usually have complicated structures with the coating of wave absorption. On the base of calculation and modeling of the geometrical structure of the warplane in real size, the HF RCS of the air crafts under two different polarizations in different direction have been calculated with the FDTD. The result shows that the above mentioned stealth warplane have the obvious characterstics of frequency resonance, polarization and the relatively large RCS in HF Band 10-30dBm2, which can be used as the theoretical reference for selection of working frequency for sky wave OTH Radar and it also means that the sky wave OTH radar has good capability of anti-stealth targets quantitatively.

对微波雷达具有隐身作用的飞机，其形体较为复杂且表面涂敷有强吸波材料在对一种具有隐身几何外形结构实际尺寸飞机进行计算建模的基础上，文中采用FDTD技术得到了两种极化状态下该飞机无涂敷时不同方向上的短波雷达截面RCS值其结果显示了这种隐身几何外形飞机在短波波段有明显的频率谐振特性、极化特性和较大的RCS10-30dBm2，可为天波超视距雷达在选择工作频率时提供理论参考，并定量地说明天波超视距雷达具有较优的反隐身目标能力

The results show that a MgSnO3·H2O conversion film is formed by treatment in the stannate solution at 90℃, and the immersion test and potentiodynamic polarization show that the corrosion resistance of the AZ91D alloy is improved to some extent.

结果表明：锡酸盐转化处理后合金表面形成了以MgSnO3·H2O为主要成分的转化膜，可对合金起到一定的防护作用；转化膜由细小的球形颗粒密积而成，颗粒之间存在间隙，它可以为化学镀镍的前处理过程提供良好的吸附条件；转化膜上的化学镀镍层组织致密、无缺陷， MgSnO3·H2O转化膜在镀镍层与基体之间起到过渡作用，镀层的磷含量达到9%，与基体结合良好；在3.5% NaCl (pH=7)溶液中的动电位极化测试表明，镀镍以后的合金在阳极极化过程中发生了明显的钝化，耐腐蚀性能进一步提高，对基体起到了较好的防护作用。

Calculating large numbers of models, we found that the resistivity of water is the primary factor to subaqueous IP sounding.

通过计算不同水体和水底岩石电阻率对视极化率幅值的影响发现，水体电阻率是影响水下极化率测深的主要因素。

The results of numerical modeling of subaqueous induced polarization show that the topographic don't have influence on the section of IP sounding.

水底极化体有限元正演模拟的结果表明，水底地形对激发极化测深结果没有影响。

Continuous superfusion of IMG with 5-HT did not affect SP depolarization, while continuous superfusion of IMG with SP did not affect 5-HT depolarization.

用5-HT持续灌流IMG，对SP去极化反应无显著影响，同样用SP灌注IMG对5-HT去极化反应亦无显著影响。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。