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Firstly, this paper investigated roundly the basic theory of the ambient vibration method, analyzed systematically the main methods of ambient vibration identification, and discussed their advantages and disadvantages. Then we established the finite element model of structural dynamics and test model and analyzed their mutual relation, improved MUSIC method and correlation function method in the harmonic identification, and gave the subspace method and correlation function method based on continuous model, which is multi-harmonic retrieve technique. And then, this paper also puts forward least-squares method to estimate directly structural physical and modal parameters; this approach replaced the derivative operator in the continuous time model with an equivalent approximation, and estimated the physical parameters of structures by the least-squares method. And then, we discussed the approximation methods of derivative and their convergence. Finally, this paper researched the modal parameters of a frame structure by the simulation and test. The results demonstrated that subspace method, correlation function method and the least-squares method are effective and stable respectively.

全面地研究环境振动识别方法的基本理论，系统地分析环境振动识别方法的主要方法，讨论它们的优点和不足；建立结(来源：6666AB44C论文网www.abclunwen.com)构动力学的有限元模型和试验模型，分析有限元模型与试验模型之间的相互关系；改进谐波识别中的MUSIC识别方法和相关函数识别方法，给出大型结构模态识别的连续型的子空间分解识别方法和相关函数识别方法，这个方法是多元谐波识别方法；提出直接识别结构的物理参数和模态参数的最小二乘方法，这个方法利用导数的近似值代替导数值，并运用最小二乘方法识别结构的物理参数，讨论导数近似值的选择方法，分析算法的收敛性；通过仿真计算和模型实验，研究高层框架结构的模态参数识别，验证子空间分解识别方法、相关函数识别方法和最小二乘识别方法的有效性，算法的稳定性；从理论和试验两个方面分析和研究噪声对识别精度的影响，影响识别精度的因素，以及部分模态成分的模态参数不能够被识别的原因。

Respectively to draw the relation of complication after operation with the index of right ventricular diastolic and contractile.

观察分析右室收缩功能和右室舒张功能指标与术后并发症的发生率的差异。

The government has only grasped the interaction relation between policy and market, trend to know clearly turn of the market, could make it's order and choose have convincingness even more at the efforts with decision make and policy make.

政府只有掌握了政策与市场的相互作用关系，洞悉了市场变化的趋势，才能使得其在决策制定的时点选择和决策力度上更具说服力。

Through our many years effort , established with numerous customers at present long-term cooperative relation, left the good public praise in customer, become to in craft brother .

经过我们多年的努力，现时与众多客户建立了长期合作的关系，在客户中留下了良好的口碑，成为同行业中的佼佼者。

When to take four samples in one tree, commonly the samples are taken in "cross" relation, but the analysis shows it is not the best choice. The more the samples are taken at obtuse angle with each other, the better the representation of the samples.

在两个或者3个方位采样时，方位之间呈钝角关系时，其代表性最好。4个方位采样时，一般使用的"十字交叉法"并不是最好的选择，建议采样的方位之间尽可能多的成钝角关系。

The variation regularity is discussed that the stress, temperature and deformation of the current-carrying annular plate are altered with the variation of loaded electromagnetic parameters. According to the relation between the deflection of annular plate and the parameters, it is proved that the deformation and stress can be controlled by changing the electromagnetic and mechanics parameters.

变换电磁参量，讨论了载流环形薄板应力、温度及变形随外加电磁参量的变化规律；根据圆环形板的挠度与参量之间的变化规律，并通过实例证实了可以通过改变电、磁、力场的参数来实现对板壳的应力、应变状态的控制。

But precisely because Deleuze privileges body with the absolute power to enact the heterogeneous relation, he overlooks the already presupposed complexity among body, language and thinking.

但正是因为德勒兹赋予身体以主导异质关系的绝对能力，他也就忽视了异象关系早已预设的身体、语言和思考之间的复杂性。

In specialized diaphysis course teaching does guidance with the teaching theory from correcting the relation of the teaching subject and object to set out,and selects heuristic teaching method.

在专业骨干课教学中，从端正教学主体客体出发，以教学理论为指导，采取启发式教学方式，在教学内容的组织过程中及时补充科研动态，拓宽教学知识面的同时突出专业重点，重视对学生专业实践能力的培养，并适应园林专业的新发展，教师作为传授专业知识的载体，应加强专业知识的积累与更新，以保证教学良性循环，培养社会和时代发展需要的专业人才。

Aim To investigate the dispersion relation of one-dimensional diatomic chain, and compared with the results of nearest neighbor approximation.

目的 研究一维双原子链的色散关系，并与最近邻近似下的结果进行比较。

The dielectric relaxation is non-Debye dielectric relaxation when slow polarization effect cannot be neglected in the samples. And from low frequency to radio frequency, the complex ε of the samples is not consistent with Kramers-Kroning relation.

实验表明：介质中慢极化效应的存在使得其介电弛豫普遍都不是德拜型的；在超低频至射频的广阔频段，样品的复ε不满足Kramers-Kroning关系。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。