大学英语词汇短语释义解析及例句 natural boundary
释义：
natural boundary [数] 自然边界
例句：
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。
Because the intensities of the 397 ka BP and present insolation minima are very similar, we conclude that under natural boundary conditions the present insolation minimum holds the potential to terminate the Holocene interglacial.
