极化

In most cases, to design a dielectric subwavelength grating polarizing beam splitter requires multilayer structure to improve diffraction efficiency.

在以介电质次波长光栅来设计并制作极化分光器的文献中，大多需要以多层次波长介电质光栅的结构来提升分光的效率。

M^(-2). The polarization curves show that the corrosion current density of sol sealed film is about 2 orders of magnitude lower than that of the film sealed by sodium bichromate, the reason is that sol particles can not only seal pores of anodized film, but also form sot-gel coating on anodized film.

m^(-2)。极化曲线显示溶胶封闭膜的腐蚀电流密度比重铬酸盐封闭膜的降低2个数量级，其原因是溶胶不仅封闭了氧化膜的孔隙，而且在氧化膜的表面形成溶胶凝胶涂层。

The polarization curves show that the corrosion current density of sol sealed film is about 2 orders of magnitude lower than that of the film sealed by sodium bichromate, the reason is that sol particles can not only seal pores of anodized film, but also form sol-gel coating on anodized film.

极化曲线显示溶胶封闭膜的腐蚀电流密度比重铬酸盐封闭膜的降低2个数量级，其原因是溶胶不仅封闭了氧化膜的孔隙，而且在氧化膜的表面形成溶胶凝胶涂层。

with the development of satellite navigation communication,antenna is a very important unit,performance of the satellite navigation communication system is affected by it partly.a new type of bifilar helix for satellite navigation communication system is introduced,and the traving-wave bifilar helix is analyzed briefly.meanwhile,the design and the test results are given.the results show that the antenna possesses excellent circular hemispherical beam with wide angle circular polarization and better impedance match,and has a compact structure and high integration.it can be applied in caps systems successful.

小 摘要：随着卫星导航通信技术的迅速发展，天线作为卫星导航通信系统中的重要部分，在一定程度上决定着卫星导航通信系统的性能。介绍一种用于卫星导航通信系统的双臂螺旋天线，讲述爬行波式螺旋天线的设计过程，并给出最终测试结果。结果表明，该天线具有优良的圆对称半球波束，良好的广角圆极化特性和优良的阻抗匹配特性，其结构简单、紧凑，为通信入站回传提供了一种优良的选择。

The main difference is that the binding energy is lower than the energy shift at fixed value of the well width.

这主要由于在阱宽一定时考虑电子—声子相互作用的自由极化子的基态能量低于束缚在阱中的电子的基态能量。

The Raman scattering intensity of single wall boron nitride nanotubes is studied based on non-resonant bond polarizability model.

利用非共振情况下的健极化模型理论，对单壁氮化硼纳米管的拉曼光谱强度进行研究。

The electron displacement polarizabilities in the hexagonal boron nitride crystal are evaluated by the new model. The results are compared with those from the classical models to point out the applied scope of the new model.

根据该模型计算了六方氮化硼晶体的电子位移极化率，并与经典模型的计算结果进行了比较，进一步分析了所提出模型的适用范围。

In the space filled with dielectric, Coulomb's law should be: F = kQ1Q2r2.V in the electric field generated dielectric polarization bound charge and bound charge generated within the medium electric field, and external electric field in the opposite direction, so to diminish the external electric field.

在充满电介质的空间里，库仑定律应为：F＝kQ1Q2r2.V在电场作用下电介质极化产生束缚电荷，束缚电荷在介质内部产生电场，与外电场方向相反，所以使外电场减弱。

Similarly there emerges a new branch of dispersion relation curve in the original frequency gap.

首先简要概述了极性晶体中的极化激元的基本特性，它的研究历史和现状。

The nagetive removal of breakdown potential and decrease of polarization resistance indicate that stress plays an important role in the localized corrosion of LY12CZ.

破裂电位的负移知极化电阻的降低说明应力对LY12CZ的局部腐蚀有明显的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。