查询词典 boundary condition

The results of numerically inverse Laplace transform are used to analyze the influences of boundary condition of tunnel and transversely isotropic property of soil on the stress,displacement and pore pressure.

由于隧道横断面尺寸远小于其纵向长度，因此，可以简化为平面应变问题进行求解。如果隧道埋深大于其半径的10倍时，这种类型的隧道可以假设为深埋隧道[1]。

Through the experiments of three kinds of models mentioned above, the structural deformations of "outflow-extension","strike-slip-extension" and "uplifting-extension" are studied and some viewpoints involving that the plastic flow in the lower lithosphere controls the extensional structures are stated as follows:(1) Regional extensional structure does not result from the direct extension along the upper crust, but from the plastic flow in the lower lithosphere and its dragging and stretching the upper crust;(2) Deformation of continental extensional structure resulted from the active uplifting of mantle is conditional that the significant extension occurs only in the models with free- or outflow-boundary condition on both sides, whereas the passive uplining of mantle exists widely, because it is an inevitable consequence of the efiect of thermo-gravity isostasy;(3) Strike-slip shearing in the lower ductile lithosphere, including site-restricted and site-unrestricted shearing, can result in various types of extension structures;(4) The"graben-horst"type extensional structures can be formed in difierent mechanisms, including outnow-extension, shear-extension, uplifting-extension and their synthetical action.

通过上述三种模型的模拟试验，比较系统地研究了"泄流-伸展"、"走滑-伸展"和"上隆-伸展"等构造变形，提出岩石圈下层塑性流动控制了各种伸展构造变形的观点，主要包括以下几方面：(1)区域性伸展构造不是上层直接受到拉伸，主要是下层流动牵引上层伸展；(2)地幔主动上隆引起大陆伸展构造变形是有条件的，需要侧边伸展或不受约束的边界条件，而被动上隆广泛存在于地壳断裂或减薄部位，是热和重力均衡的必然结果；(3)下层塑性流动中的走滑剪切，包括限位剪切或非限位剪切，可以引起不同型式的伸展构造；(4)总结了"堑-垒"型伸展构造的多种成因机制，包括泄流、走滑、上隆及综合作用均可形成"堑-垒"构造，但组合形式不尽相同。

Based on the composite bounded reservoir model with two porous media, the Laplace solution of dimensionless pressure distribution under inner boundary condition (considering the wellbore storage and the skin effect) has been studied, and through analyzing the structures and interrelations of Laplace solution, the correlations with usual composite, two porous media and homogeneous reservoir pressure distribution have been found.

针对双孔介质复合封闭储层模型，研究了两种内边界条件(是否考虑井筒储存和表皮效应)下的变流率问题的无因次内、外区储层压力分布的Laplace空间解，在深入剖析了解的结构和相互联系的基础上，找出了它与常见的复合、双孔、均质储层压力分布间的相互关系。

In evaluation of errors of precise capacitor s due to geometric, imperfection, one has to solve Laplace equation subject to irregular boundary condition.

在研究精密电容器的几何尺寸误差引起的电容量误差时，往往需在不规则边界的边值条件下求解拉普拉斯方程。

Based on second-order Laplace equation and boundary condition, obtains the integral equation after Green transformation.

基于二维Laplace方程和边界条件，经过Green转换得到以势函数及势函数法向导数为未知量的积分方程。

In Kuksin's the monograph, assuming the potential depends on n-parameters, he showed that the Schrodinger equation with Dirichlet boundary condition possesses many invariant tori for "most"(in the sense of Lebesgue measure) parameters.

Kuksin 在他 1993 年的专著当中表明，对于依赖于参数的势函数来说，满足 Dirichlet 边值条件的非线性薛定谔方程，对于大多数(在 lebesgue 测度意义下)的参数，存在许多不变环面。

Data ofeffective parameters in line heat forming in shipyard are measured , and the effect principles oftemperature stress, order of heating line , curvature of plate,boundary condition and secondheating on shape formed are qualitatively analysed,and its curves and data tables are presented.

通过对船厂实船板加工数据的测量，定性分析温度应力、加热线顺序、加工板曲率、边界条件及二次加热对成型效果的影响规律，并给出其变化曲线和数据对比。

In chapter four,we give the proof of some results about the lower bound for the first eigenvalues with non-boundary condition.

第四章给出了不带边情形下的一些第一特征值下界估计的证明。

We have made detailed studies of the influence of heat flux from the magnetosphere and ion flux along the magnetic field line of force on the morphology of the ionosphere. The validation of our ionospheric model is further verified. We contend to use radar data to specify the upper boundary condition in the simulation of the high-latitude ionosphere.

详细研究了磁层热流、离子沿磁力线的通量对极区电离层形态的影响，从另一角度证明了目前已建立的电离层模型的有效性，建议用雷达数据作为模型顶部边界条件开展电离层内部物理过程研究。

Firstly, we establish the 3-D heat transfer model of the swine crura under the effect of indirect monkshood moxibustion, analyze the temperature distribution on the surface of the monkshood during the moxibustion in the experiment, then apply the boundary condition to the model with the air convection considered and calculate the temperature and heat flux distribution of the 3-D model at different times. Beside, we also compare the results of the 3-D model with the experiment and the results of the 2-D model to verify the correctness of the 3-D model.

本文先建立了艾炷隔附子饼灸作用于生物组织的三维传热模型，然后根据实验条件分析了艾炷燃烧过程中附子饼底面的温度分布情况，并在模型上施加了新建立的温度边界条件，同时考虑了生物模型表面的空气对流条件，计算得到了三维生物模型在不同时刻的温度分布图和热流量分布图，而且对三维模型的计算结果、实验以及二维模型的模拟数据进行了比较，验证了三维模型的准确性。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。