查询词典 coupling coefficient

Then, base on the equivalent circuit model for cascaded coupled resonator filter, the method for measuring or computing the phase of the reflection coefficient of short-circuit terminated networks and synthesizeing all the inter-resonator couplings and resonant frequencies of the filters to be tuned is studied intensively. The phase loading effect is removed and the tuning steps are analyzed. The method based on the partial fraction expansions of admittance matrix is used to synthesize coupling matrix of the filters under tuning.

然后，通过分析级联耦合滤波器的等效电路模型，着重研究了利用测量或计算终端短路网络的反射参数的相位来综合出待调级联耦合滤波器各个腔体的谐振频率和腔体间的耦合系数的方法，并且消除了端口相位加载的影响，给出了具体的调试步骤；接着利用导纳矩阵部分分式的展开来求得待调滤波器耦合矩阵，着重研究了消除端口相位加载的方法。

Numerical calculations are performed on the decoherence rate as a function of the polar angle, the Coulomb binding parameter, the coupling strength, the confinement length of quantum dot and the coefficient dispersion.

由于声子的自发辐射，造成量子比特的消相干，根据数值计算结果，讨论了极角、库仑结合参数、耦合强度和色散系数对消相干速率的影响。

The general calculation method of equivalent self-inductance coefficient of non-mutual-inductance-coupling two-end self-inductance network has been studied.

探讨无互感耦合的任意二端自感网络等效自感系数的一般计算方法。

This essay discussed and analyzed the equivalent self-Inductance Coefficient of two inductors connected in parallel,and solved the equivalent self-Inductance of perfect coupling with L Hospitcl rule .

文章分析和讨论了两个线圈分别在反并接和顺并接时的总等效自感系数，并用"洛必达法则"求解线圈在理想耦合状态下的自感系数。

In view of the questions in theoretic analysis and numerical simulation with the finite element method,the separation criterion of chips, the surface contact, the setting of friction coefficient,and the thermal stress coupling are researched. A simulation example is presented by applying the finite element analysis software-ANSYS,and the change of stress and strain in metal cutting process, the forming of shear plane and the influence of the temperature field on metal cutting are analyzed. The tool's strength is also analyzed.

基于理论分析和实际有限元数值模拟计算中遇到的问题，研究、讨论了切屑分离标准、表面接触、摩擦系数的设定、切屑与工件之间的连接以及热应力耦合分析等各项技术，并应用大型有限元分析软件ANSYS，具体分析了金属切削过程中应力和应变的变化、剪切面的形成以及温度场对金属切削的影响，并依此对刀具作强度分析，得到若干结论。

Using the coordinate transform method, the strain tensor transformation relation and the objectivity hypothesis, the rational forms of Darcy' law in both spatial description method and material description method are derived respectively, as well as the seepage coefficient expression for large-strain deformation coupling.

采用坐标和应变张量变换方法以及客观性假设，分别导出Darcy定律在空间和物质描述两种情况下的合理形式，同时还推导变形耦合情况下大变形法渗透系数的表达式。

The simulative model of temperature field and stress field in concrete , Heat and moisture coupling、Parallel simulative calculation of concrete with water pipe cooling、 Parallel feedback analysis of thermal characteristic parameters, and stress intensity factor of induced joint, which are the sixty-four-dollar questions, are studied in this dissertation. The main contents of this dissertation are as follows:(1)Based on the past and current research work, the calculation theory of the transient temperature field and creep stress field of mass concrete which self temperature influence is considered is deduced. The couple effect between the temperature field and humidity field of concrete, is considered on the basis of conservation law of water and energy, and the coupled formulation which coefficient is not constant of the heat and moisture in concrete is deduced. The calculation theory and model which is theoretically strict for solution to thermal problem in concrete with water-cooling pipes are recommended.

本文主要针对混凝土的温度场应力场仿真计算模型、热湿耦合、水管冷却问题的并行仿真、混凝土温度参数并行反演分析以及诱导缝应力强度因子计算等混凝土大坝温度应力数值仿真的关键技术进行了较为深入的研究，全文主要内容如下：(1)在现有研究基础上，推导了考虑自身温度影响的混凝土非稳定温度场和徐变应力场的计算理论；基于水分质量守恒和能量守恒原理考虑混凝土温度场和湿度场的耦合作用，推导了混凝土的变系数热湿耦合方程，并建立了相应的计算模型；引用严密的水管冷却混凝土温度场的计算理论和计算模型，比较了两种简化计算方法用于水管冷却混凝土仿真计算的不足。

Considering seep, on foundation of stress coupling theory, use water to spend dam of force of overweighted law counterpoise and its ground system again the condition getting power in running a course actually undertakes numeric imitate, provide realer enumerated data for choppy criterion thereby, right overweighted coefficient and traditional convergent criterion criterion do comparative analysis.

在考虑渗流—应力耦合理论基础上，采用水重度超载法对重力坝及其地基系统在实际运行过程中的受力状态进行数值模拟，从而为突变判据提供较实际的计算数据，并对超载系数和传统的收敛准则判据做对比分析。

It has been found that the system could appear steady and maximal entanglement state periodically through modulating the squeezing coefficient, the coherent amplitude factor and the ratio of detuning to coupling constant.

发现调控光场压缩参量、相干态振幅参量及失谐量与耦合系数之比，可以得到系统稳定的最大纠缠态，且此态具有明显的周期性。

In a O〓-Ar mixture, the dynamic process of vibration-dissociation coupling behind a primary shock front is studied. The variation of many of the physical quantities with time are calculated out, such as the vibrational energy level distribution, the vibrational energy, the vibrational relaxation time, the dissociation incubation time, the dissociation product concentration, the dissociation rate and the dissociation rate coefficient.

对O〓-Ar体系考查了正激波后振动激发与解离耦合的动态发展过程，计算给出了振动布居分布、振动能、振动弛豫时间、解离孕育时间、解离产物浓度、解离速率、解离速率系数各物理量随时间的演化。

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％。