查询词典 coupling coeffecient

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。

The influences of the external magnetic field on the properties of the excited state of the polaron in a parabolic quantum dot are studied by using the linear combination operator and the unitary transformation method, the relation of the first internal excited state energy E1, excited energy △E and the resonance frequency ω of both the strong-and weak-coupling polaron with the effective confinement length l0 of the quantum dot, the electron-phonon coupling strength α and external magnetic field B are derived.

采用线性组合算符和幺正变换方法研究了外场对抛物量子点中极化子的激发态性质的影响，导出了强、弱耦合情况下极化子的第一内部激发态能量E1、激发能量△E、共振频率ω与量子点的有效受限长度l0、电子－声子耦合强度α以及外场B的关系。

In view of the current multi-dimensional physical strength sensor universal existence coupling, the author proposed one kind of new sensor structure, solved the coupling problem from the basic structure.

针对当前多维力传感器普遍存在的耦合问题，提出一种新型的传感器结构构思，对从结构上来解决耦合问题进行了探讨。

According to the fact that a universal coupling was constant ly broken in a mine, the paper gave a common formula of the drive rate of a bi universal coupling on the basis of other people s work, and thus a universal conclusion was obtained that the drive rate can be kept constan

本文根据某矿山万向节频繁扭断事故的实例，在文献 [1]、 [2 ]的基础上，导出了双万向联轴节传动比的普遍公式，并得出了保持传动比恒定的普遍性结论。

The main elements affecting load coupling characteristics among channels were analysed based on joint space dynamics equations of Stewart platform, and four kinds of load coupling evaluation index were presented with the matrix and vector norm theory.

基于Stewart平台关节空间动力学方程，分析了影响通道间负载交联耦合的主要因素，采用矩阵和向量范数理论提出了4种负载交联耦合评价指标。

We compare the results with the analytic results from the weak coupling limit and the strong coupling limit. As an extension, when think about the dispersion relations for SU(2) trapped bosons, we find that we can not get the inverse effective mass directly from the dispersion relations of the holon-isospin excitation for the wave function from Bethe equation is not the eigenstate wave function of the total momentum.

作为推广，我们还研究了无限深势阱中SU(2)玻色子的各类激发态的色散关系，发现由于直接的Bethe Ansatz 波函数不是总动量的本征态，所以不同通过直接的色散关系来给出质量有效质量比。

In this dissertation, InGaAs/InGaAsP/InP MQW microdisk laser and its characterization were presented. Some conclusions are as following: the characteristics of lasing threshold was discussed by using rate equation. The dependent relations between threshold and cavity volume, spontaneous emission coupling efficiency β were investigated. The whispering gallery mode and spontaneous emission in a microdisk geometry were then studied. Almost all spontaneous emission was coupled into the lowest order TE mode when the normalized thickness of photonics well was between 0.15 and 0.5. The design principle and device process of InGaAs/InGaAsP/InP MQW microdisk laser were presented. The microdisk lasers with the diameter of 8μm, 4. 5μm and 2μm were succesfully fabricated by using etching techniques. The pulse lasing thresholds for the microdisk with the diameter of 8μm and 4. 5μm were 170μW and 15μW, a record results compared with the published in the literature. The cw lasing threshold for a 2-μm-diameter microdisk was only a few μW. We haven't found similar report up to now. To solve the problem of directional output in a microdisk laser, the power coupling efficiency in a double disk geometry was investigated with the theory of waveguide mode couple. A new structure of electrically pumped microdisk laser with output waveguide was designed, making a foundation for the practical use of microdisk laser.

本文主要研究InGaAs/InGaAsP/InP多量子阱半导体碟型激光器的研制和特性表征，并取得如下结果：利用速率方程理论讨论了激光器激射阈值的特性，分析了阈值与腔体积和自发发射耦合系数β之间的关系；讨论了微碟光子阱结构中的自发发射特性和微碟中WGM模式特性；光子阱结构在其归一化厚度在0.15-0.5之间时，几乎全部自发发射进入到最低阶TE模式中；研究了InGaAs/InGaAsP/InP多量子阱微碟激光器的结构设计原理和器件的制备工艺；利用刻蚀方法成功制备出直径分别为8μm、4.5μm、2μm的碟型微腔激光器；直径8μm和4.5μm的微碟脉冲光泵浦激射阈值分别为170μW、15μW，是目前所见文献报导中比较低的；直径2μm的微碟连续光泵浦激射阈值仅几μW，目前尚未见到达到类似结果的研究报导；为解决微碟激光器激射光定向引出的问题，通过波导耦合模理论分析了双层碟之间功率耦合效率；据此设计了新型带耦合输出波导的电泵浦微腔激光器，为进一步研制可实用的电泵浦微腔激光器打下基础。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"