查询词典 connected complex

It is proved that all monic polynomials of order n with roots lying in some open region on the complex plane forms a simply connected set in the polynomial parameter space. Based on this result, Edge Theorems for D-stability of general polyhedrons of polynomials and Boundary Theorems for D-stability of compact sets of polynomials are obtained.

证明了其根位于复平面中某开域的所有n阶多项式的全体构成多项式参数空间中的一个单连通集，并基于这一结果进一步提出了关于一般多面体多项式族D-稳定性的棱边定理和关于一般多项式紧集D-稳定性的边界定理。

Adopting the conformal mapping or rotation axis etc complex methods which areoften used to treat with the hole or cavity problem,a two-dimensional cavity ofeither simply or multiply connected region is projected into the interior of acircle or an annulus.As well as the global coordinate system is turned into thelocal coordinate system.

采用处理孔口问题最常用的映射函数和移轴等复变函数方法，把复杂的单连通区域和某些复连通区域型二维孔洞转化为简单的单位圆内区域或圆环区域，把整体坐标转为局域曲线坐标，而，最终把问题简化归结为一组无穷代数方程组的求解问题。

In order to develop an useful synthestic process, we have synthesized amides with various substitutents. The isoquinoline skeleton was constructed through Bischler-Napieralski reaction, followed by asymmetric reduction of the imine intermediates with a Ru complex to form the only chiral center. Finally, we connected the two phenyl groups by Heck reaction and effectively obtained optically active aporphine alkaloids.

为了发展一套实用的合成方法，我们首先制备於苯环上具有不同种取代基的苯乙醯胺，接著透过Bischler-Napieralski反应进行分子内合环，并利用钌金属对亚胺中间体进行不对称的还原反应，建立出产物中唯一的光学活性中心，最后再利用Heck反应连结两个苯环，就可以顺利得到具有光学选择性的阿朴吩类天然物。

We introduce two pyridinedicarboxylate (2,5-H2pdc and 2,6-H2pdc) ligands, under hydrothermal or solvothermal condition, to yield 7 complexes with InCl3. Complex 17 presents a rare example of chiral binodal (4,8)-connected lattice with self-interpenetration.

选择了两种吡啶二羧酸配体： 2，5-吡啶二羧酸(2，5-H2pdc)； 2，6-吡啶二羧酸(2，6-H2pdc)和InCl3反应合成了七个配位化合物其中17表现了一例少有的手性的(4，8)连接的双节点自穿插拓扑结构。

In the complex, the centrosymmetric dimeric [V2O2](superscript 4-) unit connected to neighboring Cd(superscript 2+) through the phosphonate group, forming 2D network.

在配合物中，[V2O22](上标 4-)单元利用配体的膦酸氧原子桥联镉离子而形成二维网状结构。

For example, to CaSiO〓, wallastonite and cyclowallastonite could be found simultaneously in glazes between the temperature range of 1125℃±10℃, only wallastonite came out below the range, and only cyclowallastonite appeared above the range. Similarly, melilite structure and clinopyroxene structure connected with crystallization temperature. Usually, higher crystallization temperature contributes to forming melilite with simple structure and lower crystallization temperature contributes to clinopyroxene with complex structure.

如钙的偏硅酸盐，硅灰石、环硅灰石的转变温度区域为1125℃±10℃，组分适当的特定釉熔体，高于此温度出现环硅灰石，低于此温度出现硅灰石晶体结构；同样的，黄长石、辉石的出现也与温度有密切的联系，通常，晶体生长的温度较高有利于晶体结构简单的黄长石出现，晶体生长时温度较低有利于稍复杂的辉石结构的出现。

Curriculum is a complex system. It is hoarily connected with many subjects such as philosophy, psychology, cult urology, sociology etc; however, the closest and the most intricate relation to it should be the teaching theory.

课程作为一个复杂的体系，与哲学、心理学、文化学、社会学等诸多学科有着久远的渊源，但其中关系最为密切、最为错综复杂的，当属教学论。

X-ray crystal structure analysis for complex 1 reveals that the copper ion is penta-coordinated by a D-and a L-diamine ligand, and two copper ions are bridge-connected by two cyanides from [Fe6](superscript 3-) in axial position.

晶体结构分析表明，化合物1中Cu离子处于五配位的配位环境，分别和1个D-La，1个吞L-La及[Fe6](上标 3-)中的l个氰基配位，2个Cu离子通过[Fe6](上标 3-)桥联。

Traditionally, a surface is usually scatted in an array of 3D data points which are topologically connected by rows and columns to form a rectangular mesh. This method can't meet the requirement of description and measurement for some complex surfaces. On the basis of tracing border points, a new method is proposed to deliver 3D data points of surfaces, which are topologically constructed with optimum rectangular and triangular mesh. In order to measure surface efficiently and safely with NC machine, an optimization of measurement paths is proposed to avoid interference between the measuring tool and the surface with holes. The curve design is the basis of surface modeling.

数控测量技术的发展为测量自动化、集成化、智能化提供了可能，而对于复杂曲面的自动测量规划则是测量技术中的难点问题，平行截面等数目测点分布和四边拓扑测点分布规划方法，不论在测点分布的合理性上还是在网格结构的优化方面，均难以满足形状或边界较复杂曲面的离散化描述和曲面造型的要求，为了实现任意拓扑曲面的自动测量，本文对复杂曲面的合理离散化描述和自动测量问题进行了研究，提出了基于边界跟踪、优化网格的测点自动分布规划和四边、三角混合网格的生成方法：同时对具有孔洞或测量干涉凸台等非完整曲面的测量路径优化问题进行了研究，提出了路径优化方法。

The Ink Jet Printing industry emerged around the early 1970s. It is still populated by a number of specialist companies which own, develop and licence the technologies and supply the equipment. They are connected to their end-users by a complex network of dealers, distributors and licensed printer manufacturers. They are supported by ink manufacturers, which in some cases have been bought into the company. This is a study of an enterpise spun-out from Cambridge Consultants Ltd using a new technology, ink jet printing.

喷墨印刷工业露出冰山一角在20世纪70年代，现在仍然被一些专门的厂商所组装，这些厂商拥有，发展，注册这些技术的专利，并且供应这些设备，他们和最终用户通过复杂的经销商网络，发行人和许可打印机制造商，他们被油墨厂商所支持，在一些情况下，油墨厂商被买进公司，这个是一个从剑桥顾问公司使用新喷墨印刷技术衍生出的公司。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。