查询词典 coupling

A new scheme of target discrimination in SAR images, consisted of frames, models and algorithms, is proposed. Under such a scheme, a global frame, combining orderly the algorithm based on feature extraction and that based on knowledge, is then proposed. Moreover, in the method of target discrimination based on feature extraction, a "loose-coupling" model is given. The existing features are chosen and three new features about the contrast are given under the "loose-coupling". Meanwhile, an algorithm of feature selection based on Genetic Algorithm is also modified to solve the problem that the existing algorithm can not evaluate the goodness-of-features comprehensively. The weighted quadratic distance discriminator is designed to improve the performance of target discrimination. Finally, a method based on the knowledge of target groups to remove clutter false alarms is also given.

提出了一种目标鉴别的新方案，该方案包括目标鉴别的框架、模型以及算法；提出了基于特征选取鉴别和基于编队提取鉴别"序贯"连接相结合的目标鉴别框架；在基于特征选取进行目标鉴别的方法中，提出了目标鉴别的"松耦合"模型；提出了"松耦合"模型下目标鉴别的特征提取方法，包括已有特征的筛选和3个新的对比度特征的提出；改进了一种基于GA的特征选择方法，克服了已有方法对特征优劣评价不全面的问题；设计了加权二次距离鉴别器，提高了鉴别的性能；研究了基于目标编队知识进行进一步杂波虚警剔除的方法。

Based on orthogonal function unfolding theory, the transverse fields can be represented as a superposition of waveguide modes. And according to coupled-wave theory, the time-dependent multi-mode coupling-wave equations (or the generalized telegrapher's equations) and the coupling coefficients among the different modes were deduced. The generalized telegrapher's equations are a set of coupled one-dimensional partial differential equations for the amplitudes of the modes.

应用正交函数的展开理论，将变截面波导中的电磁场表示为横电波和横磁波本征模式的级数；然后根据耦合波理论，推导了考虑波导金属壁有限电导率的变截面波导时域多模耦合波方程组及各模式间耦合系数的表达式。

The different channel coupling and tensor coupling are taken into account.

考虑了不同的道耦合和张量耦合。

The coupling portion (18) is formed at the coupling end (20) and is disposed centrally thereat.

连接部分(18)在连接端面(20)上形成，并位于连接端面(20)的中心部位。

In the LDA coupling experiment, the output is top-hat distributed at the end of the duct and the coupling efficiency is 85.4%.

建立了激光二极管阵列端面耦合实验系统，实现了85.4%的耦合效率和均匀的抽运耦合场输出。

In the calculation for the nonadiabatic F2~P_(3/2, P_(1/2)+ H_2 reaction, it is foundthat Coriolis coupling and electronic coupling potential have a relatively minor effecton the reactivity from the ground state at lower translational energy, but a nonnegligible one at higher translational energy.

在本论文中我们把绝热的含时波包和RPD(reactant-product decoupling)反应散射计算扩展到了能够包括F 原子外壳层电子的自旋和轨道角动量的非绝热计算，并在ASW(Alexander-Stark-Werner)势能面上研究了这些反应的非绝热效应。

For simulation model of two-wheelers, this paper regards the two-wheeler, the cyclist and the road as a mechanical coupling system while emphasizing the actual situation, and proposes a human-vehicle-road coupling system modeling method.

在两轮车仿真模型的研究方面，本文着重于实际情况将两轮车、骑车人和路面视为一个力学耦合系统进行分析，基于此提出了人-车-路耦合系统的建模方法。

And the grasp features of the combined numerical cyclist dummy's hand is determined by simulation experiments, highlighting the interaction force between the cyclist and the two-wheeler, the driving inertia of the two-wheeler, the coupling force between the tyre and the ground, and thus set up the human-vehicle-road coupling system simulation model.

通过仿真试验确定组合式骑车人数值仿真假人的手部抓握特性，突出骑车人与两轮车之间的相互作用力，两轮车的行驶惯性和其轮胎与地面之间的耦合力，从而建立了骑车人-两轮车-路面耦合系统仿真模型。

By comparing of different treating methods of wood-fiber: treated with silane coupling agent, NaOH solution and silane coupling agent, grafted by poly, it can be found that grafted wood-fiber evenly distributed in PVC matrix. Grafted wood-fiber and PVC matrix had a better interfacial compatibility than that of the ungrafted wood fibers, which was verified by scanning electron microscope observation.

比较了硅烷偶联剂处理、氢氧化钠溶液浸泡与硅烷偶联剂双重处理，接枝改性等3种木纤维表面处理方法对木纤维／PVC复合材料界面及性能的影响，通过扫描电镜照片发现接枝改性木纤维在PVC基体中分散更均匀，与PVC界面相容性好。

The study on the mean number of phonons of the strong-coupling bondage polarons in magnetic field;2. The first excitation energy and the mean number of phonon of the strong-coupling magetopolarons in the polyatomic semi-infinite polar crystals were studied through a linear-combination operator and unitary transformation.

采用线性组合算符和幺正变换，利用变分法计算了多原子半无限极性晶体中由电子和光学声子强耦合相互作用所产生的磁极化子的第一激发能量及平均声子数，并通过适当的数值计算图示了它们与磁场的关系。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。