自密集

An adaptive grid scheme controlling cell area is used to generated grids in the divergent section of symmetric annular nozzle, and the generated grids are used in the flowfield calculation through the uncoupled way. The elliptic equations are used to generate grids in three dimensional regions of FDN divergent section, the source terms used in the equations employ a mathematical form which is independent of the boundary shape and of the boundary grid point distribution, the free parameters contained in the source terms are determined by the two restraint conditions, the intersection angle of transverse grid lines with boundaries and the local curvature of the transverse grid lines at the boundaries, and the interior grid distribution controlled directly by the grid point distribution assigned on the boundaries is realized, it makes the grid more clustering near the nozzle wall. For the generated grids in the whole computational regions have a good smoothness and orthogonality, the accuracy of calculation in the flowfield is ensured.

对轴对称的环形喷管采用控制网格面积的自适应网格方法对扩散段部分进行了网格生成，并通过非耦合方式应用于喷管的流场计算中；对强制偏流喷管扩散段内的三维区域采用椭圆型方程进行网格生成，方程中的源项采用了与边界形状和边界网格点分布无关的数学形式，源项内的自由参数由横向网格线与边界的交角及横向网格线在边界处的局部曲率两个约束条件来确定，实现了由边界上的网格分布直接控制内部的网格点，使壁面附近具有较密集的网格，并且在整个计算区域内的网格都具有良好的光滑性和正交性，从而保证了流场计算的准确性。

In the western region of Sanhe-Pinggu earthquake area, the stacked deep seismic reflection section shows 2～3 groups of strong reflective layers and a series of basement faults. In the eastern region of Sanhe-Pinggu earthquake area, there is a set of dense, westward-dipping, reflective strata with relatively strong energy, which have the typical characteristics of sedimentary basin. The largest depth of the sedimentary basin is about 8～9 km.

剖面TWT3～4 s以上，反射层位丰富，构造形态清晰，且在剖面上具有明显不同的构造特征；在三河—平谷地震区以西，剖面揭示了2～3组反射能量较强的反射震相和一系列错断基底面的断裂，在三河—平谷地震区以东，为一套自东向西倾伏的密集强反射层，这套反射具有典型的沉积盆地特征，盆地最深处约为8～9 km。

The mechanism of two phenomena is rerealed by the perturbation theory.

利用矩阵摄动理论揭示了2种现象的发生机理，得到空间结构模态局部化和跃迁现象发生的内因是结构自振频率的密集分布，外因是结构物理参数的微小变化。

Leaves crowded toward apex of stems or spaced along distal part of stems, sessile or petiolate; petiole to 8 cm, base amplexicaul; leaf blade usually sword-shaped to elliptic-lanceolate, veins truly parallel from base, lateral veins absent.

叶密集向茎先端，或在茎上部间隔的，无柄或具叶柄；叶柄给8厘米，基部抱茎；叶片通常剑形到椭圆形披针形，脉真地平行的自基部，侧脉无。

The development of nationalist sentiment in Catalonia can be traced back to before the Middle Ages. In those times Catalonia already had political organizations as well as the most robust stronghold for a collective Catalonian identity, namely the broadly and intensively used Catalan language.

加泰罗尼亚之民族情素的产生，可溯自中古世纪以前，当时就已经有政治机关存在，且拥有最坚固的加泰罗尼亚集体身分的堡垒，那就是广泛且密集地使用加泰罗尼亚语。

In those times Catalonia already had political organizations as well as the most robust stronghold for a collective Catalonian identity, namely the broadly and intensively used Catalan language.

加泰罗尼亚之民族情素的产生，可溯自中古世纪以前，当时就已经有政治机关存在，且拥有最坚固的加泰罗尼亚集体身分的堡垒，那就是广泛且密集地使用加泰罗尼亚语。

Thin, hollow, and pointed, these glasslike stems grow from tiny, barely formed white bulbs found in clumps just above the soil level.

这些稀薄、中空的、尖锐的、玻璃状的梗，生长自极小的鳞茎，密集而丛生在土壤里。

At the same time, there was remarkable difference in the calcium distribution on the wall of micropylar canal between self-pollinated and cross-pollinated ovules: abundant calcium precipitates were found on the wall of self-pollinated ovules, whereas none on cross-pollinated pollen.

同时，自交和异交授粉胚珠珠孔道壁钙信号表达也存在很大差异，自交授粉胚珠珠孔道壁有大量钙颗粒密集，而异交授粉胚珠珠孔道壁无钙沉淀积累。

Since the 20th century 50's, the high-tech industry belt as the crowded region of high-tech industry, has developed rapidly in the world scope, and the American Boston 128 roads high-tech continuous region, England's Scotland silicon valley, M4 number corridor, etc., has formed in successioa Various provinces and cities in our country also follow the tendency of colony development and regionalizing layout of the high-tech industry, extend the space of high-tech zone and plan constructing high-tech industry belt.

高新技术产业带作为高新技术产业发展的密集地带，自20世纪50年代起在世界范围内迅速发展，相继形成了美国波士顿128公路高新技术连绵地带、英国的苏格兰北部硅谷、M4号走廊等高新技术产业带。我国各省市也遵循高新技术产业集群化发展、区域化布局的发展趋势，纷纷拓展高新区的发展空间，规划建设高新技术产业带。

basing on optics orthogonal codes,this paper proposes a new design scheme of three-dimension optics orthogonal codes.in this scheme,the optics orthogonal codes can be coded not only in space-domain,in time-domain,but also in frequency-domain.it has good auto-cross relativity properties.the simulation figures show that can enlarge the coeds capacity and improve the optics optical communications system performance.so it will be of interesting in coming high dense communication system.

摘 要：基于光正交码编码技术，提出了一种新型空/时/频三维ooc的设计方案，对光信号在时、频和空域进行编码，该码具有理想的自/互相关特性。通过仿真比较，在容量和系统的误码率等性能方面比一、二维ooc都有较大的提高，因而能很好地适应未来高密集光纤通信。关键词：三维光正交码；光码分多址；误码率；高密集光纤通信

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。