查询词典 structure equations

According to the method for force analysis of statically indeterminate structure and that of common planar mechanisms, the structural deformation coordination equations, which are based on the microdisplacement of movable pushrod, are put forward.

建立偏心轮推杆行星传动的有限元分析模型，用有限元软件全面分析了传动中各啮合零件的变形和啮合刚度，得到了各个零件啮合刚度的变化规律。

At present, kinds of methods of finite-element analyzing bridge structure's limit bearing capacity for concrete's complex stress nature get the concrete's constitutive equations and destructive criterion by fitting regression line.

目前采用有限元方法分析桥梁结构极限承载力的方法中，对受力性能复杂的混凝土材料，基本上是通过实验数据回归拟合得到混凝土的本构关系和破坏准则。

Fractal dimension structure of the Cosmos are explored, and the mathematical foundation, which include the expressions of fractal dimension differential and calculus, regular space integral solutions of fractal dimension differential equations, the fractal calculus definitions of fractal measure as well as the measure computational equation of self-similar fractal, of fractal dimension calculus and fractal measure are given.

摘 要：探讨了宇宙分维构造的形式，给出了分维微积分及分形测度的数学基础，包括分维导数及分维微积分的表述形式、分维微分方程的规整空间积分解、分形测度的分维微积分定义及自相似分形的测度计算方程。

In third chapter, a model of step structure was introduced, and the fixed points of its Hamiltonian renormalization equations can be used to classify the different Si surfaces.

第三章首先简单的介绍了重整化群方法，然后讲述一个台阶结构的模型，它的重整化群方程的不动点可以用来区分不同的Si表面的台阶结构。

Secondly, based on the different structure characteristics and additional conditions, we study several kinds of inverse problems of pseudoparabolic equations. One is a kind of pseudoparabolic inverse problem of identifying a constant coefficient solved by combining the formal solution of the problem and the additional condition properly. The second is the pseudoparabolic inverse problems of identifying an unknown boundary function and an unknown source term solved by using the Riemann function method to get the formal solution of the problem and then using the additional condition to transform the problem into a Volterra integral equation of the second kind. The third is a kind of backward heat flow problem of nonlinear pseudoparabolic equation solved by combining the Riemann function method and the fixed point theory properly.

其次，根据不同模型的结构特点和附加条件，研究了几类伪抛物型方程的反问题：一是利用问题的形式解并结合附加条件，解决了一类伪抛物型方程常数系数的反问题；二是利用Riemann函数方法获得问题的形式解，利用附加条件将问题转化成求解第二类Volterra积分方程问题，解决了一类伪抛物型方程未知边界值的反问题和未知源项的反问题；三是将Riemann函数方法和不动点定理相结合，解决了一类非线性伪抛物型方程的后向热流问题。

Maxwell's equations describe the structure of the electromagnetic field.

麦克斯韦方程是描述电磁场结构的。

In this thesis, we investigate the local structure-preserving algorithms for second order and high order nonlinear Schrodinger equations.

本文研究了二阶和高阶两类非线性Schrodinger方程的局部保结构算法。

Simultaneous equations model plays an important role in making economic policies, analyzing economic structure and forecasting.

联立方程计量经济学模型在经济政策制定、经济结构分析和经济预测方面起着重要作用。

A set of simultaneous, linear algebraic equations results for the entire structure, in which the structural displacements are unknowns.

阿的同时，线性代数方程的整体结构，在这种结构位移未知结果集。

These have the mathematical structure of the corresponding one-body equations (Klein-Gordon for two spinless particles, Dirac for two spinor particles) with a relativistically reduced mass.

这些有相应那个身体方程式(克莱因戈登适合二spinless 粒子，迪拉克适合二spinor 粒子)有降低群众的relativistically的数学结构。

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％。