查询词典 matching problem

Since the multiple scattering should be considered, the scattering problem of many-cylinders is more complicated than single cylinder. By using scattering matrix method to solve the scattering problem of many-cylinders, first we have to express the incident fieldand scattered field by special function（for example, Bessel function and Hankel function）under cylindrical coordinate, then use the addition theorem of special function to get a linear system of equations to relate the incident field coefficients and scattered field coefficients. The incident and scattered field coefficients for every cylinder can be solved from the linear equations by matching electromagnetic boundary condition pointwisely.

单颗圆柱散射体的散射场解析解很早就被解出，而多个圆柱阵列的散射场问题因为涉及到入射光在圆柱与圆柱间的多重散射，故散射行为较单颗圆柱的散射复杂，因此圆柱阵列的多重散射问题需要利用加法定理来处理；散射矩阵法的主要精神即是先用圆柱座标下的特殊函数对平面波和圆柱散射体的内外域电磁场做无穷级数展开，再藉由特殊函数的加法定理将所有圆柱散射体的展开中心移到同一个展开中心，最后可以得到一组连结整个散射系统的入射电磁场系数及散射电磁场系数的线性方程组，将该组线性方程配合电磁场在散射体边界的连续条件，便可分别求出圆柱阵列中各个圆柱体的内部电磁场与外部散射场，再利用线性叠加原理即可求得整个圆柱系统的全域电磁场分布。

Then, by taking the local features provided by users as portions of the AAG, and the whole CAD model as the whole AAG, the problem of local feature matching is transformed into that of subgraph isomorphism. Subgraph isomorphism is a NP-complete problem.

在局部匹配过程中，用户输入的局部结构被表示成"子图"，待匹配的整体CAD模型被表示成"大图"；则在整体CAD模型中，检索局部结构的问题就被转换成在"大图"中寻找同构"子图"的问题。

In this paper we equate the problem of predicting the disulfide bonding in proteins to a problem of finding the graph matching with the maximum weight.

本文将一个蛋白质结构中二硫键的预测问题，等价为一个寻找图的最大权的匹配问题。

But the key problem of stereopsis, stereo matching, is not solved in a good way, especially in the complex scenery. How to improve the anti-jamming ability of the matching algorithm and reduce the complexity and computation magnitude, is worth to studying and investigating in deep way.

但作为立体视觉的关键问题——立体匹配，却并未得到很好的解决，特别是在复杂场景中，如何提高匹配算法的去歧义性和抗干扰能力，降低算法的复杂度和计算量，都需要进行更深入的探索和研究。

The main content of this dissertation includes: 1. Research on the theory of ultrasonic power supply, introduce its development process. On the basis of these, fix on the scheme of medical ultrasonic low-power supply. 2. According to the principle of modularized design, divide medical ultrasonic low-power supply into four parts. They are power amplify circuit, power control circuit, frequency automatic tracking circuit and matching circuit. Separately research on their theories and design their circuits and necessary programs, especially, effectively resolve the problem tracking the supersonic vibration system with a narrow syntony frequency bandwidth and a high swing. 3. The matching experiments gain good result, and prove that medical ultrasonic low-power supply is entirely up to the mustard on intellectualization, wide band of working frequency, steady output and high efficiency.

本文工作的主要内容包括： 1、研究了超声功率电源的原理，并回顾了它的发展过程，在此基础之上确定本文医用小功率超声电源的设计方案； 2、按照模块化的设计原则，将医用小功率超声电源的设计分解为功率放大电路、功率控制电路、频率自动跟踪电路和匹配电路等四个部分，分别研究了各部分的原理，在此基础之上进行了具体的电路设计和程序设计，尤其是有效地解决了对谐振频率带宽窄振幅高的超声振动系统的频率跟踪问题； 3、通过与超声振动系统的各项配合实验，取得了很好的实验结果，验证了医用小功率超声电源完全满足智能化、工作频带宽、输出功率稳定、输出效率高的设计要求。

It also introduced selecting methods of the power redirectors in the steering-system design. Moreover it also did the further research on the power redirectors matching and coordination problem of the suspension system and the steering-system, calculated steering wheel strength and momental gradient when the heavy-duty vehicle matched two kind of power redirectors, did entire vehicle performance simulation research on two matching schemes of the suspension system and the steering-system.

还介绍了在转向系统的设计过程中动力转向器的选型方法，另外还针对动力转向器匹配及转向系统与悬架系统匹配问题做了进一步的研究，对重型汽车匹配两种动力转向器时车辆的转向盘力和力矩梯度进行了计算，并对两种转向系统、悬架系统匹配方案进行了整车性能的仿真研究。

Therefore, applies dark-field imaging technique to capture images to solve the problem. It is divided into pattern matching and surface defect detection. In the pattern matching, we applied the Blob method to extract the characteristic of the words, and we used Euclidean distance to match the characteristics, recorded the position of the word.

在影像处理分析部份，分成样品比对与表面瑕疵侦测，在文字侦测是以影像连结体为主来萃取文字的几何特徵，且透过欧式距离来做特徵比对；至於图案则采用两阶段式搜寻方法与三步搜寻法来找出最相似区块，最后并记录样品比对后之位置。

Part two : Analyzed the program of dynamic signal matching, expounded the pile wave analysis program by the method of characteristics, characteristic connection detruding, the problem of initial value or edge value, piles calculating model and pile-soil system, indicated the lack of the traditional high strain dynamic signal matching program.

第二部分：对实测曲线拟合法进行分析，阐述了弹性体细长杆中纵波传播的特征线解，特征关系的推导，初值与边值问题，桩的计算模型，桩侧土模型，桩尖土模型，指出传统拟合分析程序的参数不够全面的缺点。

To achieve the circuit capacity of maximal power transmission and least return loss, impedance matching networks are generally inserted in the input and output ports,compnter simulation solves the problem of how to settle the impedance matching network composition and component parameters in high efficiency.

射频电路设计中为了达到最大功率传输、减少回波损耗等电路性能，一般在输入和输出端加入阻抗匹配网络来加以改善，计算机仿真高效地解决了确定阻抗匹配网络结构及各元件参数的问题，通过ADS仿真确定了射频电路中匹配网络的元件最佳参数。

To take one especially spectacular example: A traditional paisley pattern was embroidered on the sleeves of a coat, then it trailed off down the leg of the matching trousers before reappearing on the lapels of a suit and the shoulders of a sweater (which also featured a leopard-print collar). Here's another illustration: Sheeshedar, the mirrored Indian fabric you've seen in markets since time immemorial (or at least since hippies crossed the landmass from Asia to America), was used to make a pair of trousers—and matching shoes. Then it was teamed up with a poncho that could have been sliced from shaggy white yak wool. Just perfect for the backstage area of a Led Zeppelin reunion concert, but curiously incongruous for a McQueen fashion moment. Perhaps that was the problem with this show.

最明显的表现部分就是：古波斯国的传统涡纹花呢被设计师运用细腻精致的刺绣织造手法，展露在外套的袖口、西装长裤的小腿肚、西装外套的翻领、以及毛衣的双肩部份，（还有美洲豹皮纹也被添加在领口处）；同时，镜面反射般的立体明暗光泽也被McQueen加强在成套的裤装/鞋款上，那种神秘的异国光泽，年代攸远似乎已不可考，但早期曾在嬉皮年代被一些摇滚乐手从印度辗转传至美洲和英国；不过可惜像是南美风格的白色堥牛毛poncho披风，却被评为，似乎适合Led Zeppelin演唱会后台的歌迷们穿著、而极不搭调在McQueen的fashion how现场。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。