结构单元

Experiments showed that the data points art inure separable in this algorithm. The algorithm can overcome tilt' faults of traditional Cell-Based algorithm, which need to he recomputed from the scratch for even' change of the parameters. It also tins higher detection rate at higher convergence speed.

试验结果表明，该算法能有效突出样本之间的差异，克服传统基于距离的孤立点发现算法易随参数变化而需调整单元结构的缺点，且具有更准确的检测率和较快的收敛速度。

The land in Development Zone includes not only non agricultural land with certain infrastructure, but also agricultural land in the sphere of planning, which is to be requisitioned.

开发区土地利用的可持续性涉及到各土地利用单元自身的可持续性和整个区域土地利用结构的可持续性两个方面。

From the view of time and space evolution of tectonic in rifted basin ,the genetic and structural classification schemes of buried-hill are put forward,on the basis of tectonic dynamic system.

以区域动力系统为背景，以构造的时空演化为主线，以断陷盆地为单元，提出了潜山的成因及结构分类方案，研究了断陷盆地潜山成因的动力学机制，揭示了潜山类型的多样性、分带性及时空展布规律。

This chapter holds that the literary work is the polyphony of the heterogeneous strata, which contains the stratum of phonetic formations, the stratum of semantic units, the stratum of schematized aspects, the stratum of represented objects.

第一章文学作品的多层次构成认为，文学作品是由语音构造层、意义单元层、图式化观相层、被再现的对象层构成的异质复调的整体结构。

Cutting process of soft tissue and organs is very important in virtual surgery simulation. Tetrahedron is widely used to construct the geometric model of virtual organs. Efficient methods must be developed to split or merge tetrahedrons in order to adapt to topology changes during cutting process. The main parts of this thesis are the two chapters on "Reconstruction of Tetrahedrons" and "Stability of Tetrahedrons".Main research work I have done is listed as follows:1 Reconstruction of Tetrahedrons.

人体软组织及器官的切割仿真是虚拟手术仿真的重要组成部分，软组织及器官的几何模型普遍采用四面体模型，切割的同时，软组织及器官的拓扑结构发生变化，模型中的部分四面体基元必须能够通过分裂或合并以适应上述变化，医学数据在三维场景中的交互和可视化是手术仿真的基本要求，因此，第二章&四面体重构&以及第三章&四面体单元稳定性&是本文重点讨论的两个部分。

Topological structure: The mesh topological data are used to depict the space geometric shape, namely, the topological structure formed by several mesh units constructed by a certain connection order. They have types of points, line-segments, triangles, polygons, tetrahedrons, hexahedron, pyramids and cuneate shapes.

拓扑结构：网格拓扑数据是用来刻画数据分布区域的空间形状，即若干网格单元按一定的连接顺序所构成的拓扑组织，其类型有点、线段、三角形、多边形、四面体、六面体、角锥体和楔形等。

Chiral SalanCrX complexesa saturated version of SalenCr(ⅢX are designed,and in conjunction with an ionic quaternary ammonium salt or organic strong base can efficiently catalyze the asymmetric,regio-and stereoselective alternating copolymerization of CO_2 with rac-PO at mild conditions to afford isotactic-enriched polycarbonates with～95%head-to-tail linkages and moderate enantioselectivity.

本论文在Salen构型配体的基础上，设计合成了一系列手性Salan型铬配合物，并将其与季铵盐/有机强碱组成亲电-亲核双组分催化体系，在室温下可以有效的催化CO_2和环氧丙烷的不对称交替共聚反应，实现了CO_2和环氧丙烷的不对称交替共聚反应的区域和立体化学控制，得到95%的头尾连接单元和中等光学纯度(对映体过量值ee%≈70%)的全同结构的聚碳酸酯。

Firstly, this thesis describes the structure of the arc-shaped element combination anti-slide pile.

本研究首先提出拱形单元组合抗滑桩的结构形式。

The results indicated that the calculated model of suspended bridge built by beam and bar elements can be used to the seismic responsive analysis of structure, whose result is reliable.

结果表明，采用梁杆单元建立的悬索桥计算模型可有效地进行结构的地震响应分析，具有良好的可靠性。

New type brake beam limited element model structure analysis solid element

新型制动梁；有限元建模；结构分析；实体单元

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失