The river forms a natural boundary between the two countries.
那条河在这两个国家之间形成一条自然边界。
The last two integrals correspond to the natural boundary conditions.
最后两个积分对应于自然边界条件。
The Rio Grande River forms a natural boundary between Mexico and the United States.
格兰德河是美国和墨西哥之间的天然界河。
In this paper we discuss the natural boundary element method for harmonic equation in an exterior elliptic domain.
本文以调和方程为例，研究椭圆外区域上的自然边界无法。
Based on the natural boundary integral equation for two dimensional elasticity, a corresponding elastoplastic formulation is presented in this paper.
以二维弹性力学自然边界积分方程法为基础建立了二维弹塑性问题的自然边界积分方程。
These algorithms are given by both the finite element A- method and the nonoverlapping domain decomposition method based on the natural boundary reduction.
这些算法采用了有限元A-法和基于自然边界归化的非重叠型区域分解算法。
The effect of imposing natural boundary condition as constraints is considered and it is shown by a plate bending problem that this effect is quite superficial.
文中对自然边界条件作为约束条件的影响给予了考虑，并以板的弯曲问题为例说明影响极微。
By using Green function, the boundary integral formula and natural boundary integral equation for the boundary value problems of biharmonic equation were obtained.
利用Green函数，根据双调和方程边值问题的边界积分公式和自然边界积分方程。
In this paper, we investigate the natural boundary element method for the boundary value problem of harmonic equation in an exterior elliptic infinite sector domain.
研究了椭圆外无穷扇形区域上调和方程边值问题的自然边界元法。
The characteristic of this model is only to know basic and natural boundary condition, then the stream function and flow velocity required on the boundary are obtained.
这一模型的特点只需要知道边界上的基本边界条件和自然边界条件，就可以得到边界上所需要求的流函数和水流速度；
The results indicate that the higher order element exhibits better convergence than the lower order element in all cases without imposition of natural boundary conditions.
结果表明，在所有情况下，与低阶元素相比，高阶元素均显出有较好的收敛性。
In this paper, we investigate the artificial boundary conditions and its numerical methods based on natural boundary reduction for hyperbolic initial boundary value problems.
本文研究双曲型初边值问题基于自然边界归化的人工边界条件及其数值方法。
Thinking over the influence of box beams shear lag effect, making use of the governing different equations and related natural boundary conditions of bending vibration to box girder.
考虑箱形截面梁剪力滞后效应的影响，利用推导出的箱形截面梁的弯曲振动方程及其自然边界条件，并据此进一步推导出了多跨箱形截面梁的固有频率方程。
Part I, the artificial boundary condition and its numerical methods based on natural boundary reduction for hyperbolic initial boundary value problems on unbounded domains is studied.
第一部分，研究无界外区域双曲型初边值问题基于自然边界归化的人工边界条件及其数值方法。
The Planners, moreover, renounced an obvious, structural boundary and relied on palms as a natural green marker.
而且规划师放弃一个显而易见的，结构性的边界，并以棕榈树作为一种天然的绿色标记。
For natural images of complex texture, a supervised boundary detection method using the multi-information fusion was proposed.
针对自然图像纹理复杂的特点，提出了一种多种信息融合的有监督边界检测方法。
The boundary condition differences between natural power and artificial driven fracturing in hydraulic and hydroelectric engineering are presented.
分析了水利水电等工程中的水力劈裂与人工致裂边界条件的不同。
The natural BIE can be employed directly to obtain boundary stresses and displacement derivatives.
自然边界积分方程分析可直接获得边界应力和位移导数。
The measurement results show that there is really a distortional boundary layer displacement surface on the ground board, and it fully differs from natural growing boundary layer on the ground board.
测量结果表明：在地板上确实存在一个畸变的附面层位移面，它与自然增长的地板附面层截然不同。
The recharge simulation method of intercepting certain boundary flow under higher natural water table is studied and presented.
研究并提出了较高天然地下水位条件下截取边界定流量补给模拟方法。
The second part will try discover the cause of diversification from the region culture, natural environment, demand subdivides, system design, green design and missing of boundary.
第二部分，从地域文化、自然环境、需求细分、系统设计、绿色设计、边界的消失等角度论述导视系统多元化的成因。
This kind of harmony mainly displays in: Human and natural harmony, color and scenery harmony, heart and boundary harmony.
这种和谐主要表现在：人与自然的和谐、色与景的和谐、心与境的和谐。
The changing pattern of the natural vibration characteristics of thin rectangular elastic plate is studied under the boundary conditions of elastic support and elastic embedding.
研究了在弹性支撑和弹性嵌固边界条件下，弹性矩形薄板固有振动特性的变化规律。
Using the length-determination method, an analytical solution of the relation between natural frequencies and shell lengths with arbitrary boundary conditions is obtained.
利用长度待定法，得到壳体在任意边界条件下固有频率与壳长关系的精确解。
The temperature boundary layer of a natural convection along a vertical heated plate is measured quantitatively.
对沿竖直加热平板自然对流的温度边界层进行了定量地测量。
The rock mass boundary can be any excavated and natural free surfaces.
岩体的边界可以是任何自然岩石边坡与人工开挖的任何岩体表面。
The rock mass boundary can be any excavated and natural free surfaces.
岩体的边界可以是任何自然岩石边坡与人工开挖的任何岩体表面。
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