| 1. | The expression of the third - order nonlinear polarization of self - interaction in uniaxial crystals
单轴晶体中三阶非线性自作用极化强度矢量的计算 |
| 2. | Standard test method for conducting cyclic potentiodynamic polarization measurements for localized corrosion susceptibility of iron - , nickel - , or cobalt - based alloys
铁镍钴基合金的局部腐蚀敏感性的循环动电势极化强度的试验方法 |
| 3. | Then a simple analytical formula is obtained , which expresses the constitutive relation between polarization p and loading electric field e of ferroelectric materials
由此推出一个简单的解析表达式，表达了铁电材料极化强度p与外电场e的本构关系。 |
| 4. | The tourmaline with great spontaneous polarity can purify water and air . so it can be used in building decorating material , purifying water materials and cleaning air materials
自发极化强度大的电气石具有净化空气和水的作用，在环保建筑装饰材料、净化水和空气材料中有很大的应用价值。 |
| 5. | The hit spot was round or circle on the crystal plane . therefore , the intensity of spontaneous polarity and the direction of polarity could be judged by the shape of the electron - beam bombardment spot
因此根据电子束打击斑的形貌可判断电气石的自发极化强度和方向， “打击斑”亮的一端为负极，暗的一端为正极。 |
| 6. | It was found that the dropping rate in remnant polarization , pr ( n ) , of the samples would be accelerated when a high intensity or low frequency or square - wave of electric field was applied or at a lower temperature
实验结果表明，在高电场强度、低电场频率和在方波电场的作用下以及较低的温度下，铁电陶瓷材料剩余极化强度p _ r ( n )下降的速度变快。 |
| 7. | The hysteresis loops were detected , it is found that the remanent polarization and the conceive field of the ceramics deceased with the dope of ba2 + . in the composition range of mpb , the conceive field exhibit the lowest value
测试了样品的电滞回线，发现batio _ 3的掺入有效降低了nbt基陶瓷的剩余极化强度和矫顽场，在准同型相界组成点，矫顽场达到最小值。 |
| 8. | It was found that the schorl or dravite in schorl - dravite group that is produced from pegmatite and has good crystal degree had a strong intensity of spontaneous polarity by electron - beam bombardment and x - ray diffraction of varying the temperature
利用电子束轰击结合变温xrd分析发现在schorl - dravite系列电气石中，产于伟晶岩的，结晶度比较高的mg电气石或fe电气石具有较高的自发极化强度。 |
| 9. | In the second chapter , the nonlinear optical properties are described from both macroscopic and microscopic views , at the same time , giving the definitions of the linear and nonlinear polarizabilities . then , the explicit expressions of the linear and nonlinear polarizabilities are obtained by using quantum mechanical perturbation theory and density matrix formalism , respectively
第二章非线性光学性质，首先分别从宏观和微观两个角度讨论了极化强度和电偶极矩与外加光电场强度之间的关系，同时给出了线性极化率和非线性超极化率的定义，然后分别运用含时微扰理论和密度矩阵理论求解了分子体系的线性极化率和非线性超极化率。 |
| 10. | We have developed the theory of boundary shielding approximation of electric polarization , from which the values of spontaneous polarization of some typical ferroelectric materials can be derived . the shielded charges in ferroelectricity are in the state of surface bound polaron - dipole whose creation and annihilation must span a potential barrier . by introducing statistical method , four types of typical electric hysteresis loops of some common crystals and ceramics have been given , which are well consistent with the experimental results
利用电极化的边界屏蔽近似，可计算出一些典型铁电单晶的自发极化强度.铁电屏蔽电荷处于表面束缚极化子偶状态,其产生和湮没要跨越位垒.由统计方法给出的一些常见晶体和陶瓷的四种典型电滞回线形状，和实验观察到的结果一致 |
