| 1. | Symmetry properties of theme image in light in august
主题意象的对称性 |
| 2. | An example of using symmetry property and the equation groups solving the determinant
利用对称性和方程组解行列式一例 |
| 3. | The general formulation of pti , the substructure method of pti , and the proof of symmetry property of matrix exponential in pti are proposed
接着给出基于常规时间差分的求湃算法，并讨论热传导灵敏度分析的半解析方法。 |
| 4. | The symmetry properties of the optical coherence with respect to the detuning of the light frequency from resonance show up in specific symmetries of the spectra
研究表明，透射光谱随薄膜厚度的增大而展宽，光谱呈现对称性。 |
| 5. | They have a number of desirable properties not possessed by wavelets of daubechies type , namely : they have symmetry property ; the scaling function and physical space representation are identical ; expansion coefficients are easily computed ; in certain respects they are more accurate ; the functions ( but not their derivatives ) can be computed without solving an eigenproblem . the price to be paid for these advantages is the loss of orthogonality , interpolating wavelets are only biorthogonal
本文主要的研究成果是把一维的某些结论推广到高维，分为以下四个方面： ( 1 )使用二元拉格朗日插值法构造二元尺度函数和小波函数，使其具有紧支性、对称性以及函数展开式的系数易于计算等优点。唯一的缺陷是缺乏正交性。 |
| 6. | It consists of several parts as follows : in the first part , after an introduction of basic theory and history of filter banks , an analysis of lattice structure filter banks is given . the requirements of perfect reconstruction and linear phase are discussed and some constrains of filter length and symmetry property are analyzed in details . besides , relative designing practice and examples are given
论文的工作主要有如下几个部分：第一部分，我们介绍了子带滤波器组的基本理论和发展情况，研究了格型结构滤波器组，讨论了其完全重构条件和实现线性相位的要求，并详细分析了在实现完全重构线性相位格型滤波器组时滤波器的长度和对称性约束，讨论了优化设计的方法，并给出了例子。 |
| 7. | Starting from symmetry properties of equation and considering the variable - coefficient of the equation as a new dependent variable , a new general method to solve variable - coefficient equation is proposed . the solution of variable - coefficient equation can be expressed by an arbitrary solution of the corresponding constant - coefficient equation . taking schridinger equation as a concrete example , the method is recommended in detail
将非线性方程的变系数看作与实际物理场具有相等地位的新变量，利用普遍的经典李群方法可以求解某些特殊类型的变系数方程，其解由相应的常系数方程的解表示.以非线性薛定谔方程为具体例子，介绍了这种方法.并给出了特例色散缓变光纤变系数非线性薛定谔方程的精确解 |
| 8. | ( 3 ) various digital image - processing techniques for suppression of undesired components and enhancement of quality in numerical reconstruction images are considered , such as hologram contrast - enhancement , hro subtraction , mean value subtraction , frequency domain filtering and spectrum expansion with conjugation symmetry property
( 3 )从理论和实验两方面分析了全息图对比度增强、平均值相减、 hro 、频谱滤波等数字图像处理技术，及其在消除全息图衍射0级和孪生像，提高数值再现像信噪比方面的作用。 |
