查询词典 coupling

WUXI LUDE TECHNOLOGCIAL CO.,LTD., invested by PUN TEH INDUSTRIAL CO.,LTD in 2003, with 28 years of gestation. We have 45000 square meters , first-class modern production and 28 years of accumulated experience in hydraulic coupling ,pneumatic coupling, water coupling and other applications, which create and well versed in all variety of world types ,like European standard, American standard and Asia standard. Also welcome the development and creation of different coupling types. Now our technique have run neck and neck with world industrial advanced countries, building long term OEM cooperation with world brands and having high reputation all over the world.

1980年成立的台湾鹏德工业股份有限公司经过28年的孕育，于2003年投资兴建无锡陆德科技有限公司；占地40000㎡，一流现代化生产，累积28年对油压、空压、水用及各种快速接头经验，创造全世界各式各样的快速接头型式规格：欧洲规格、美洲规格、亚洲规格样样精通；并可以接受各型各样的快速接头的开发与制造，与世界工业化先进国家，先进品牌并驾齐驱，并与世界品牌长期建立OEM的合作关系，享誉国际。

In this topic, the dynamic analysis methods for piezoelectric vibrator are studied systematically based on the theoretical model, FEM numerical experimentation and FEM governing equation for given compound-mode vibrator, and some valuable conclusions are obtained. The main work accomplished is summarized as follows: 1.Elaborate the main modeling methods for piezoelectric vibrator and the significance and necessity to study the dynamic characteristics of piezoelectric vibrator which emphasize the urgency of this paper. 2.Take the bending deformation induced by piezoelectric ceramic as example, the energy transfer mechanism of electric energy to mechanical energy are analyzed; the motion and force transfer mechanism are analyzed for the longitudinal-bending vibrator. 3.Based on mode assumption and Hamilton principle, the coupling model of piezoelectric vibrator of linear USM is built; moreover, the equivalent circuit model is obtained and a coupling equation represents the relation between electric parameters and mechanical parameters is derived which provides foundation to match the vibrator and driving circuit. 4.Combine the constitutive equation of piezoelectric ceramic with elastic-dynamical equation, geometric equation in force field and the Maxwell equation in electric field and the corresponding boundary condition equation, the FEM control equation for piezoelectric vibrator of USM to solve dynamic electro-mechanical coupling field is established by employing the principle of virtual displacement. The equation lays the foundation to study the non-linear constitutive equation of piezoelectric ceramic driven by high-power. 5.Define the dynamic indexes of characteristic of vibrator and carry out variable parameters simulation by calculating the model parameters and the electric characteristics of vibrator are simulated according to the equivalent circuit model. By numerical experimentation, the working mode of vibration of vibrator and the shock excitation results of the working frequency band which provides the mode frequency to realize bimodal are analyzed. Detailed calculation of the electro-mechanical coupling field parameters is made by programming the FEM control equation.

本课题从理论模型、有限元数值试验、有限元控制模型等方面以复合振动模式振子为例对超声电机压电振子的动力学特性及其分析方法进行了全面系统地研究，得出了许多有价值的结论，主要概括如下： 1、阐述了目前针对超声电机压电振子的主要建模方法，对压电振子动态特性的研究意义和必要性进行了论述，突出了本文研究内容的迫切性； 2、以压电陶瓷诱发弹性体发生弯曲变形为例，分析了压电陶瓷通过诱发应变来实现机电能量转换的机理；对基于纵弯模式的压电振子的运动及动力传递机理进行了分析； 3、基于模态假定，利用分析动力学的Hamilton原理，建立了面向直线超声电机压电振子的机电耦合动力学模型，并据此建立了压电振子的等效电路模型，导出了电参量与动力学特性参量的耦合方程，为压电振子与驱动电路的匹配提供了依据； 4、从压电陶瓷的本构方程出发，综合力场的弹性动力学方程、几何方程、电场的麦克斯韦方程以及相应的边界条件方程，采用虚位移原理，建立了压电振子动态问题机电耦合场求解的有限元控制方程，为研究其大功率驱动下的非线性本构模型奠定了基础； 5、界定压电振子的动力学特性指标，对压电振子的机电耦合动力学模型参数进行计算及变参数仿真；依据等效电路模型，对压电振子的电学特性进行了仿真分析；通过有限元数值实验，对压电振子工作模态附近的模态振型及工作频率附近的频段进行了激振效果分析，找出了实现模态简并的激振频率；利用有限元控制方程，通过编程计算，对压电振子的力电耦合场参数进行了详细计算，得出了一些有价值的结论。

In order to make cross joint type universal coupling long service life , puts forward setting up the torque examining system to control the torque, inspecting the position of input and output equipment to control the space position of the coupling and reduce the influence of additional force moment and control ling the balance force and the bearing clearance and so on, to avoid the coupling premature failure or shattering of the coupling.

为使十字轴式万向联轴器长寿命服股，提出了设置转矩测试系统控制转矩；通过监测输入及输出设备的位置控制联轴器的空间位置，以减少附加力矩的影响；控制平衡力及轴承间隙等技术控制措施，避免联轴器过早失效或损坏。

Coupling between nonparallel waveguides is studied by coupling mode theory, and the coupling equations and coupling coefficients are obtained.

利用耦合模理论对非平行波导耦合特性进行了研究，得到了非平行波导的普遍性耦合方程及耦合系数表达式。

Basing on the theory of"Back-door coupling"and"Front-door coupling", the aperture coupling backed with a box and the mutual coupling between antennas have been discussed in this paper.

本文从电磁耦合的两大途径即&后门耦合&和&前门耦合&出发，分别研究了屏蔽腔体的孔缝耦合效应和多天线系统天线互耦问题。

The electric capacity coupling matching and inductance coupling match are two kinds of forms that conducted coupling, passing the analysis to constitute the mechanism and principle to them, putting forward repressing a few of their methods: Match the length that can adopt to let up to lead line and enlarge the line to be apart from to the electric capacity coupling ,.

电容性耦合和电感耦合是传导耦合的两种形式，通过对它们构成机理以及原理的分析，提出了抑制它们的几种方法，如对于电容性耦合可以采用减小导线的长度、增大线间距，平衡法，对干扰源和被干扰源进行屏蔽等方式进行抑制干扰；对于电感耦合可以用减小互感，局部形成耦合环，对干扰源进行屏蔽等方式来对干扰进行抑制。

The analysis model of grouped-metadata may construct based on coupling information of variables and methods inside component. According to formal component couping testing criteria description, coupling relationship among methods inside component is decribed using component methods coupling graph. And DU table is further constructed, which includes definition and definition information of component method. Then observation mechanism based on observation–points is introduced in order to increase the observability of component. An implementation framework of testable component is constructed bansed on coupling information.

分层描述性元数据中的分析模型基于构件内变量和方法之间的耦合信息来构造，根据形式化的构件耦合测试准则描述，使用构件方法耦合图的概念描述构件中方法之间的耦合关系，进而构造包含构件内定义和使用信息的DU表，并引入旨在提高构件可观察性的基于观察点的监控机制，构造一个基于构件耦合信息的可测试构件的总体实现框架。

Related keyway, and bolt coupling mainly refers to camshaft keyway, keyway and flexible coupling flange connection piece (with the pump power transmission coupling), Half key, as well as fixed coupling bolts.

相关键槽、联轴节及螺栓主要是指凸轮轴键槽、联轴节凸缘键槽和弹性连接片（用联轴节传递动力的油泵）、半圆键以及联轴节固定螺栓。

The main products for a variety of claw-type couplings, flexible set-pin couplings, nylon-pin couplings, flange coupling, multiple-lengthening coupling, rigid couplings, the cross slider Shaft, Plum coupling, as well as by coupling a mechanical pump, swelling the production of 20 sets of several series, thousands of specifications.

主要产品为各种爪型联轴器、弹性套柱销联轴器、尼龙柱销联轴器、凸缘联轴器、多节式加长联轴器、刚性联轴器、十字滑块联轴器、梅花联轴器，以及各种泵用机械用联轴器等，生产的胀紧套有二十几个系列，上千种规格。

A new vacuum ultraviolet detector is described, its photocathode is a solar-blind, a proximity focus tube with less dispersion and image distortion is adopted, its read-out system has light-coupling and electricity-coupling, the light-coupling read-out system is simpler and responds in real time, the electricity-coupling read-out has high sensitivity and resolution as well as long detection distance.

详细介绍了一种新型响应波段为105nm～300nm的真空型紫外成像探测器，其光电阴极具有&日盲性&，管型采用近贴聚焦结构，从而使得弥散和像差得以减小。探测器读出系统有光耦合读出和电耦合读出2种读出方法：光耦合读出系统能实时响应；电耦合读出灵敏度高，分辨力强，探测距离远。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。