晶体学家们一直认为所以的晶体都具有旋转对称性，这样当它们转动起来时候，从各方面来看都是一样的。
Crystallographers always believed that all crystals have rotational symmetry, so that when they are rotated, they look the same.
液态晶体的不对称性给了科学家们操纵它们的工具，现在LCD屏既便宜又常见。
Asymmetries in liquid crystals gave scientists the tools to manipulate them, and now LCD screens are cheap and ubiquitous.
本文讨论了存在偶极矩作用下，分子晶体声子的对称性及声子各向偶极矩耦合情形。
In this article, the symmetry of phonons and the coupling between phonons along different coordinates directions are discussed for molecular crystals in which dipolar coupling exists.
实验结果表明DLAP单晶和LAP单晶具有相同的对称性。氘化使晶体的通光范围向红外方向扩展。
The experimental results confirms that the symmetry of DLAP is the same as that of LAP and deuterium broadens the region of transparent.
这个相的选区电子衍射花样显示出准晶体结构的五次对称性。
The selected area diffraction patterns from the phase show a fivefold symmetry of a qua-sierystalline structure.
作为一种流体，液晶蓝相能像晶体一样有三维空间群对称性，这引起了人们的广泛兴趣。
As a liquid, the blue phase shows the 3d-space group symmetry, just like crystals, which arouses people's interest.
讨论了旋转操作下TM模式带隙的变化情况，通过计算发现TM模式的带隙不仅受到晶体旋转对称性的影响同时也受内部结构介电常数的影响。
The affection of TM is discussed when the dielectric cylinder are rotated. The result is that not only the crystal rotational symmetry but also the dielectric constant can affect the band gap of TM.
根据晶体的对称性、衍射几何和衍射规律，研究了复杂的发散X射线晶体衍射。
Acoording to the crystal symmetry, diffraction geometry and the diffraction laws, the complicated divergent beam X-ray diffraction has been studied.
结果表明，光束在晶体中传输时，其入射场的偏振态和对称性发生改变。
The results elucidate that the linear polarization state and the symmetry of the incident beams cannot be kept during propagation in anisotropic crystals.
对聚合物晶体中各种高分子链的构象进行了研究，找出了它们的三维对称性，并用直线群来表征。
The three-dimensional symmetry of a macromolecular chain was characterized by the line group. Regularities of packing of macromolecular chains in a space group were shown.
用群论方法给出了一种具有特殊本征对称性的四阶张量在各点群晶体中的形式，并将其应用于声光散射转动效应的研究，获得了有意义的结果。
The form of a four-rank tensor with the particular intrinsic symmetry for a variety of crystal symmetry is given by the use of the group theory method.
对二维晶体的矩阵表示、对称性及其对X射线衍射的系统消光规律进行了研究，得到并证明了二维晶体的矩阵表示的二个定理和二维晶体对X射线衍射的系统消光定理。
The crystallographic problems of two-dimensional crystal, such as the matrix expression, the symmetry and the systematic absence law of the crystal's X-ray diffraction, are studied.
指出它们均具有C_ (2v)局部对称性，并从晶体场点电荷模型出发对具有C_ (2 v)对称性点群的分子进行了配位场半定量计算。
They belong to C_ (2v) local symmetry. From the point of view of point-charge model the ligand field semi-quantitative calculation is applied to molecules with C_ (2v) point group symmetry.
能形成低对称性的双模结构，有利于光子晶体带隙结构性能的提高，获得大面积均匀的光子晶体结构。
The optical element forms dual mode structure in low symmetry. The invention raises structural performance band gap of photon crystal, and obtains even structure of photon crystal in large area.
我们数值地研究了镶嵌在方形排列的声子晶体中声源的能量辐射角度分布。结果表明，能量辐射角度分布和增强因子强烈地取决于源相对于所处单胞的位置的对称性。
The angular distributions of power and radiation enhancement factor strongly depend on the position of acoustic source relative to the unit-cell where the source is placed.
我们数值地研究了镶嵌在方形排列的声子晶体中声源的能量辐射角度分布。结果表明，能量辐射角度分布和增强因子强烈地取决于源相对于所处单胞的位置的对称性。
The angular distributions of power and radiation enhancement factor strongly depend on the position of acoustic source relative to the unit-cell where the source is placed.
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