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Using finite difference time domain method, the electromagnetic field distribution of THz wave is simulated in a THz 2D PC splitter and by plane wave expansion method the dispersion relation and defect modes are achieved in a THz rotated PC waveguide.5. A woodpile three-dimensional (3D) PC with face-centered-tetragonal symmetry is one of the most popular 3D PCs because of its favorable band gap characteristics. Based on the woodpile fct lattice structure, we propose a novel woodpile THz lattice structure with comparatively decreased symmetry, better band gap properties and easy fabrication by varying some structure parameters.

计算结果为利用非线性光学差频方法产生THz辐射源的实验研究提供了深入和全面的理论基础；四、利用平面波展开法，通过改变二维THz光子晶体的结构参数，对二维THz光子晶体完全带隙进行了优化，分析出两种适合工作在THz波段的二维光子晶体结构；采用时域有限差分法和平面波展开法，计算出THz波在二维光子晶体"T"型分束波导，45度旋转波导中传输的电磁场分布以及缺陷模；五、Woodpile面心立方四角结构是三维光子晶体中被研究最广泛的结构之一。

In this paper,the differential relation between optic parameter and lattice parameter in electron storage ring of HLS is presented;the lattice parameter at downriver is evaluated and analyzed when the optic parameter at upriver is changed.

研究了合肥光源储存环光学参数和聚焦结构参数间的微分关系，在改变三个输运线上游的光学参数时，计算和分析了下游各个聚焦结构参数。

Birkhoff, every finite distributive lattice is isomorphic to the lattice of all filters of a finite partially ordered set.

由G.Birkhoff的一个基本定理，每个有限分配格同构于一个有限偏序集所有滤子的格。

A finite distributive lattice is called a matchable distributive lattice if and only if there exists a plane weakly elementary bipartite graph such that.

一个有限分配格L称为匹配分配格当且仅当存在一个平面弱基本二部图G使得ML。

The results show that, by the increment of the cathodic current density,the alloy electrodeposit was formed in displacemental solid solution, and that, with W content raised,lattice parameter expanded,and lattice distortion increased, whereas grain size decreased. All the morphologies of the deposits were presented in neat granular structure in the growth of electrocrystallization.

结果表明，随着电流密度的提高，合金沉积层中的W含量增大；形成置换固溶体的合金沉积层晶格参数涨大、晶格畸变度增大、而显微晶粒尺寸减小；合金沉积层的电结晶生长形态均呈现整齐的团粒状生长特征。

It is shown that for an exchange ring R, the lattice of directed convex subgroups of K〓 is isomorphic to the lattice of all stably co-finite and semiprimitive ideals of R.

作为特殊情形立得Goodearl的结果[41，定理15.20]，作为直接应用，给出了exchange环秩函数存性的一个新刻画。

We give the reconstruction of series expansion in lattice-invariant spaces and prove that the improved A-P iterative algorithm is valid in the common shift-invariant spaces. Under adding proper conditions, the improved algorithm holds in the lattice-invariant spaces too.

我们给出了在格不变空间中的级数展开重构，并证明了在一般的平移不变空间中的改进A-P迭代算法也是可行的，说明了在适当增加条件时此改进A-P迭代算法在格不变空间中也是成立的。

We look concept lattice as data structure to implement concept hierarchy on, and thus study how to implement basic rough set operations on concept lattice and use them as basic tools to solve complete or partial functional dependence.

我们将概念格视为实现概念层次的数据结构，研究了如何在概念格上实现粗糙集合基本运算，并将这些运算作为依据规则集合求解完全或部分函数依赖的基本工具。

It is also analysed that the effect of electron-lattice couple coefficient g on surface temperature, and found that g determines the surface temperature rising rate and the electron-lattice couple time.

计算模型对电子与光子耦合系数的大小对金属表层电子温度的影响进行了分析，同时考虑不同脉宽、不同能流及功率密度大小的因素。

To solve this problem,this paper presents a new incremental algorithm for building concept lattice based on an ordered set direct product operation,this algorithm is suitable for the case of the insertion of a set of objects into the context,and it can construct the Hasse diagram of the concept lattice while generating the concept.

为了适应这种情况，基于偏序集的直积运算，提出了一种新的增量式概念格构造算法，这种算法可以一次性地加入一个对象集合，而且在生成概念的同时，能够构造出概念格的Hasse图，从而完全解决了上述问题。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。