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A kind of best baffle-beard suitable for applications in the dual-frequency base station antenna is presented, meanwhile, we adopt the PSO algorithm to optimize the parameters affecting antenna pattern such as the phase of the elements, the space between the elements, such that the pattern of antenna can be shaped in the vertical plane （the pattern in the vertical plane has Cosecant beam in the service area）.

针对我国移动通信频率，以基站天线的双频工作以及阵列波束赋形为目标，设计了一种满足基站天线双频辐射要求的最佳反射板形状，并通过PSO全局优化算法优化各单元馈电相位并调整其间距以实现垂直面方向图双频波束赋形的目的（即垂直面方向图在所覆盖的服务区域内具有余割波束）。

The Graphical Representations of Connected Cubic Arc-Transitive Coset Graphs of Minimum Degree on Projective Special Linear Group PSL2,p

特殊射影群PSL(2，p)的最小级连通3度弧传递陪集图表示论文标题：特殊射影群PSL(2，p)的最小级连通3度弧传递陪集图表示

In 1980, M.A.Fiol independently found the counterexample to the critical graph conjecture.

目前知道的最小的偶阶临界图就是18阶4-临界图。

For the connecting rod bearing arrangements of combustion engines and compressors, SKF has special needle roller and cage assemblies for gudgeon pin bearing arrangements (fig 4a) and crankpin bearing arrangements (fig 5a).

SKF有用于活塞销轴承配置(图4a)和曲轴销轴承配置(图5a)的特殊滚针和保持架组件，适用于内燃机和压缩机的活塞杆轴承配置。

Uniqueness could be decided by the number and magnitudes of the peaks in the cross correlation function of the original and subset functions.

唯一性可以通过原始图和子图相关函数峰值的幅值和个数决定。

This article focuses on the line-line, line-region and region-region topological relations algorithm, which come down to the same question: whether there are intersections between line and line. The sweep-line algorithm was studied by many people, but has some deficiencies to be improved, in order to handle some special cases and increase program efficiency. My works as follows: rectangular envelope to reduce executive times , vector cross multiplication to determine intersection between line and line, coordinates and slope method to deal with some special cases. C program examples are showed together.(5) Finally, to prove capability and efficiency of the model and calculation method, some test systems are developed. For example, complex spatial topological relation query, parcels' exact area with the area of linear object reduced in land use, quality inspection to cadastral data according to topological rule, spatio-temporal change query of cadastral data.

将线线、线面、面面之间的拓扑关系实现的算法归结为线与线之间求交的基本问题；为处理一些特殊的拓扑关系情况，提高扫描线算法的效率，探讨了包络矩形粗滤、判断线线是否相交的矢量叉乘法、线节点重合或共线的斜率坐标判断法等改进方法；同时还设计了一种新的节点微小圆求交的算法，可应用于图斑与线状地物细分拓扑关系及地类面积的计算；（5）本文设计了实验系统，包括复杂对象的拓扑关系表达与计算程序、图斑地类面积的计算程序、基于空间拓扑关系规则的地籍数据库质量检查功能，以及时空拓扑关系和变化语义分析等原型，验证了拓扑关系表达模型和计算方法的可行性和实用性。

A few examples of misuse and forbidden uses are also represented (shown in the crossed out diagrams or with the "skull and crossbones" symbol).

少量错误的和被禁止的用法也标示出来了（在画叉子的图里或者图旁边标有骷髅图案）。

This image shows current intensity and magnetic field lines in a simulation of the flow of an electrically conducting fluid.

图的左侧显示的是利用导电流体模拟出来的电流强度和磁场线，图的右侧则显示了完整的流速场线。

In the following, I try first to show that instead of cursorily postulating the sameness between both of them and then doing his inquiry of justice, Plato has clear questioning consciousness and certain answer about the essence of this kind of sameness.

在下面的讨论中，我试图首先表明柏拉图不是不假思索地设定了二者之间的一致关系，然后贸然地按此关系来进行正义的研究的，相反，柏拉图对这种一致关系的性质是有着明确的问题意识和清楚的回答的。

With this method, the reliability to direct the constraint graph is increased, the computation complexity is reduced, and the cyclic constraint graph can be solved expediently.

应用此方法，可提高约束图有向化的可靠性、降低计算复杂度，且能方便地求解带有循环约束的约束图。

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％。