查询词典 method of perturbation

Through the comparison, we use traveling-wave method to measure dispersion and nonresonant perturbation method to measure interaction impedance.

测量系统采用虚拟仪器的设计思想，由测量平台、伺服电机、矢量网络分析仪、计算机等硬件组成，用LabView完成了系统软件设计。

The advantages and disadvantages of balanced truncation, singular perturbational method and generalized singular perturbation are analyzed. A quasi-generalized singular perturbational model reduction method is proposed.

分析了平衡截断法、平衡奇异摄动法和广义平衡奇异摄动法存在的优缺点，提出了一种近似广义奇异摄动模型降阶算法。

Based on this method, simulation results show that the closed-loop mobile robot system has not only the robust stability but also the perfect robust performance of tracking. The proposal of this method vanquishes the shortcomings of other methods designing controllers only for exact models, which can not ensure the system′s performance under internal perturbation.

仿真结果表明，基于此方法设计的控制器能保证移动机器人闭环系统不但具有鲁棒稳定性而且能很好地跟踪给定轨迹，具有鲁棒性能，从而克服了其他学者仅对系统精确模型设计控制器而导致系统出现内部摄动时，不能保证系统性能的缺陷。

Based on mass-spring model, a method of automatic mode-selecting method is presented to solve the difficulties of selecting corresponding modes close to the excitation frequency, in adaptive perturbation for mistuned bladed disks.

摘要针对自适应摄动法在失谐叶盘受迫振动分析中，选择接近激振力频率的相应模态数目难于控制的问题，基于质量－弹簧模型，提出一种自动选择模态的方法。

The perturbation method combined with multipole expansion method to calculate the head-related transfer functions of the snowman mode approximately, and the effects of the torso scatterings and reflections on HRTFs are analysed quantitatively.

本文提出微扰与多极展开相结合的方法，近似计算雪人模型近场头相关传输函数，并利用此方法定量分析躯干散射声波对HRTF的影响。

In the light of the complex, high-level and non-linear feature of the mathematical model which describe the transport of the coalbed methane, this paper study the fully-implicit solving method of the mathematical model in detail. Based on the complexity of the algebraic equations which are formed eventually, according to the alternating direction implicit difference pattern, this paper use the iterative method and the fully main element Gauss-Jordan eliminating method to solve equations, which is to use the iterative method to determine coefficient matrix and use the fully main element Gauss-Jordan method to solve th linear algebraic equation group, at the same time of studying the solving method of the mathematical model, according to the devising requirement of FORTRAN77 program structure, this paper draw up computer program and form the corresponding computer model, and verify the validity and reliability of the model in theory by operating the model.

重点研究了模型内、外边界及有关参数的处理，针对描述煤层甲烷运移的数学模型是一个复杂、高阶非线性数学模型的特点，详细研究了模型的全隐式求解方法，根据最后形成的代数方程组的复杂性，按交替方向隐式差分格式，采用迭代与全选主元高斯约当消去法相结合的方法求解方程：即确定系数矩阵采用迭代法，求解线性方程组时采用全选主元高斯约当消去法，在研究模型解法的同时按FORTRAN结构化程序设计的要求，编制计算机程序，形成相应的CBMRS计算机模型，并通过模型的运行从理论上证明了模型的正确性与可靠性。

The description methods of natural scenery was studied based on fractal, that is, recursive method, L-system method, IFS and IFS description method was put forward based on sine or cosine. This method overcomes angularity and consistency of recursive method, L-system method and IFS, and the variety of fractal sculpting consequence can be added and the basis for the later research and the application was provided.

对基于分形的描述自然景物方法，即递归洪、L-系统法、IFS法进行了分析研究，在此基础上，提出基于正余弦的IFS描述法，该方法克服了递归法、L-系统法、IFS法等描述方法的生硬性和一律性，增加了分形造型结果的多样性，为以后的深入研究和应用提供了依据。

The CBRC allows commercial banks to implement the internal rating method by stages, however, when a commercial bank obtains the approval for using the internal rating method, its asset coverage ratio calculated according to the internal rating method (risk-weighted assets calculated according to the internal rating method)/(risk-weighted assets calculated according to the internal rating method + risk-weighted assets of other credit risk exposures calculated according to the revised capital supervisory provisions) shall not be lower than 50%, and it shall formulate the plan for the implementation of internal rating method by stages, so as to ensure that the asset coverage ratio reach 80% in three years.

银监会允许商业银行分阶段实施内部评级法，但在获得许可使用内部评级法时，采用内部评级法的资产覆盖率（按内部评级法计算的风险加权资产/［按内部评级法计算的风险加权资产＋按修订后资本监管规定计算的其他信用风险暴露的风险加权资产］）应不低于50％，并制定分阶段实施内部评级法规划，以保证3年内资产覆盖率达到80％。

In chapter 2,all kinds of numerical methods of computational fracturemechanics are summarized,the development histories and present situation ofboundary collocation method,boundary integral method,finite difference method,boundary element method and finite element method are expounded,and theapplication of finite element method in fracture mechanics are emphaticallydiscussed.

第二章 总结了计算断裂力学中各种数值方法，论述了边界配位法、边界积分法、有限差分法、边界元法及有限元法的发展历史和现状，并着重讨论了有限元法在断裂力学中的应用。

The stress analytic method of arch dam covers pure arch method, arch beam sharing method, finite element method, calculating method of shell theory and structural model test method.

拱坝的应力分析方法包括纯拱法、拱梁分载法、有限元法、壳体理论计算方法和结构模型试验法。

Metrorrhagia is also gynaecological problems of common diseases.

崩漏是妇科常见病也是疑难症。

WordFTP gives you the convenience and timesaving you need.

wordftp让您的方便和省时您所需要的。