查询词典 symmetry

The strain distribution in QD structure of wurtzite crystal symmetry is included.

研究了量子点的子带跃迁，及其受到量子点大小变化的影响。

The crystalline structures of the film materials are highly c-axis oriented wurtzite symmetry.

随着烧结气氛中氧含量的减小，薄膜的沿c轴生长的趋势加强。

This dissertation concentrates on the application of symmetry in the design of Dammann gratings for controlling of the zero order's intensity and higher order's intensities.

本论文将镜像对称结构引入达曼光栅，设计出反转对称型达曼光栅，并对多值位相达曼光栅进行了理论设计，其主要内容如下： 1。

In the paraelectric- antiferroelectric phase transition of antiferroelectrics lead zirconate (PbZrO 3),the symmetry of crystalloid changes.

在反铁电晶体锆酸铅(PbZrO3 )顺电反铁电相变中，伴随有对称性的变化。

Simply inferred the optical-rectification effect in the silicon, discovered the optical electric voltage aeolotropic rule through the experiment of observing the relation between the optical electric voltage and the light wave direction of polarization and the orientation of crystal changing when the Si/Al schottky barrier has been illuminated, and confirm the reason is that the existence of self-field destroy the crystal symmetry, produce second-order nonlinear optical-rectification effect, and the direct-current field which has been produced by the optical-rectification effect and the self-field affect mutually.

推导了硅中的光整流效应，并通过观测Si/Al肖特基势垒受光照时产生的光生电压与光波偏振方向和晶向的变化关系的实验，发现了光生电压的各向异性规律，并确定这是由于内建电场的存在使晶体对称性被破坏，产生二阶非线性效应的光整流，光整流产生的直流电场又与内建电场相互作用的结果。

As mentioned above, this dissertation can be divided into two parts. One is devoted to study the high resolution ro-vibrational spectra of some asymmetry top molecules, such as D〓O and DOCl. Another is about studying anharmonic force field and vibrational intensities of some symmetry top molecules by quantum chemistry method, such as SiHCl〓 and AsH〓.

因此本论文的工作以此为脉络分为两个部分，第一部分以D〓O和DOCl分子为体系，研究非对称陀螺分子的高分辨振转光谱；第二部分以对称陀螺SiHCl〓和AsH〓分子为体系，用量子化学计算的方法研究了小分子的非谐性力场和振动光谱强度。

The calculations indicate that Co should be inside of Ge〓, and bicapped tetragonal antiprism structure with D〓 symmetry is found to be the most stable structure of the cluster anion CoGe〓, which has the higher bonding energy and embedding energy.

激光双重烧蚀反应表明Co原子不在Ge〓团簇的外表面，量子化学计算表明，Co原子应在Ge〓团簇的内部，具有D〓对称性的双戴帽反四棱柱构型是幻数团簇离子CoGe〓势能面上的最低点，且具有较低的结合能和内包覆能。

The method proposed is useful for studying the beam transformation through an apertured optical system with different geometrical symmetry.

该方法对研究有不同几何对称性光阑光学系统的光束变换是有用的。

Compared with the straight and helical gear, the contact and bending intensity of the symmetry arcate tooth trace cylindrical gear are high.

分析结果表明，对称弧形齿线圆柱齿轮的接触和弯曲强度均比直齿和斜齿圆柱齿轮好。

When monitoring ureteral jets with DCDS,the rule of bilaterality and symmetry on the both sides should be followed and this is a swift and more accurate method in the diagnosis of urinary diseases especially ureter obstructive lesions.

应用利尿彩色多普勒超声监测输尿管喷尿变化时，按照左右对称、两侧对比的方法进行分析判断，这对泌尿系统疾病尤其是尿路梗阻性疾病的诊断是一种更快捷、更准确的方法。

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。