The first is establishing artificial boundary problem, because of simulating the infinite field from the finite field in which intercept from the infinite field, so we introduce artificial boundary.
用有限元模拟波动问题，其首要问题是人工边界的设置问题，由于要从无限域中截取有限区域来模拟无限域，所以要引入人工边界。
In a infinite and empty space the geomagnetic field falls off in strength with the third power of distance.
在无限和真空的空间中，地磁场在强度上随距离3次方而衰减。
That absolute expanse might be difficult, even unbearable, to contemplate, like an infinite snow field of time, but the conception at least carried with it the serenity of the eternal.
可能很难设想宇宙绵延无期，就像时间的无垠雪原，这种想法甚至令人难以忍受，但是这一观念至少给人以永恒的宁静感。
This shows that the viscoelastic boundary can better simulate the volatility of energy from a finite field from the infinite domain, dissipation, and the results are more accurate.
这表明粘弹性边界能更好地模拟波动能量从有限域从无限域的逸散，其结果更精确。
Based on the nonlinear geometry field theory of continuum mechanics, this paper analyzes the stress field due to a screw dislocation in an infinite medium.
本文以非线性连续体几何场论为理论基础，分析了无限大体中一个螺位错引起的应力场。
The philosophical universalism was concern on every field and was infinite target.
哲学的普遍必然性涉及一切领域，是一个无限的追求目标。
The radiation of an electric dipole in an infinite anisotropic plasma medium is analyzed. The near field expression is obtained by pursuing the Fourier transform.
分析电偶极子在无限大各向异性媒质中的辐射场，得出了近区场的级数表达式。
The result shows that model is economic and credible in the discretization of far-field of infinite domain, especially to researching for dynamic problems.
结果表明，用这一模型来离散无限域的远场，特别是研究动力问题，具有较好的经济性和可靠性。
A sort of electrostatics problem that using electric image method to solve the electric field in the wedge area between two infinite earthing metal boards are discussed using group theory.
对静电学中用电象法求解两无穷大接地金属板间楔形区域内的电场的题目，利用群论方法加以讨论，给出了可求解的条件及一般的象电荷分布。
The movement of infinite strength, contribute, track and field, take one's ease.
运动无限，实力尽献，田径场上，自由自在。
The kinematically admissible velocity field for the indentation of semi infinite medium by a round flat punch has been established.
建立了圆冲头压入半无限体的运动许可速度场；
This paper deals with the static electricity field by conformal mapping for angular space inside an infinite linear charge be located with boundary made in conductor.
对导体平板构成的角域内具有线电荷密度的静电场进行了求解。
The half-space analytic solutions of the electric field of an infinite horizontalcylinder are acquired solving the Laplace equation in the double-polarcoordinates.
解双极坐标下拉氏方程得出半空间中无限长水平圆柱体电场问题的解析解。
Some basic necessary and sufficient conditions for the existence of various inverses of a row-column-finite infinite matrix a over a field K are proved by compactness arguments.
用紧致性论证给出了任一域k上行列有限的无限方阵a具有各种逆方阵的基本的充分必要条件。
Apply these theories in solved three typical models: the static electricity field problem of the neighborhood slit of the infinite conductor.
将这些理论应用于求解了三个典型的实例：无限大导体上的狭孔附近的静电场问题。
However, an infinite number of images must be employed in the calculation of the field with multi layer media, which results in many difficulties.
若媒质分层均匀，则经典镜像法需要无穷多个镜像来模拟这种电场问题，这给分析计算带来一定的困难。
The real ground for assigning them to another field of cognition is that in their scope and content these objects evidently show themselves as infinite.
它们之所以属于另一范围，乃是因为它们的内容是无限的。
This method is successfully applied on criticizing the holographic infinite interference diagram of the supersonic cascade flow field.
并将该方法成功地应用于超音速叶栅流场全息干涉图的判读。
The method can simulate not only the radiation damping of semi-infinite soil, but also the elasticity recovery capacity of the far field media on the boundary.
该方法不但可以较好地模拟半无限地基的辐射阻尼，也能模拟远场地球介质的弹性恢复性能。
An electromagnetic field numerical method is put forward to analyze shielding effectiveness of the infinite thin conductor and dielectric sheet based on the FDTD.
提出了基于时域有限差分算法的计算无限大导体和介质薄片电磁屏蔽效能的电磁场数值计算方法。
Based on the analytical solution to stress field around a hole in a stressed orthotropic infinite width plate, a set of equations was derived to calculate the relieved strain matrix.
以正交各向异性无限大板孔边应力场解析解为基础，导出了释放应变矩阵计算表达式，并用一个算例验证了该计算式的正确性。
The equations are applied to a semi-infinite superconductor in a static magnetic field. The integral expressions for energy-gap function and penetration depth are given.
利用这个方程组，我们讨论了恒定外磁场中的半无限大超导体，给出了能隙函数和穿透深度的积分表达式。
A complete suit of closely analytical expressions of stress field is presented for the strike slip shear fault with an arbitrary dip Angle in a semi infinite medium.
给出了半无限空间中任意倾角的走向滑动剪切断层错动产生的应力场的一套严密的解析表达式。
Since the approximating fundamental solution is infinite on boundary, we must extend the field.
由于近似基本解在边界上发散，必须将区域扩大。
Taking the infinite plate for instance, the distribution of electric field in full space is solved and detection-thickness ratio is presented to discuss the limit of advanced detection.
以无限大板状体为例求解全空间电场分布，提出探厚比概念以讨论超前探测极限问题。
In this paper, the properties of the weak coupling surface polaron for polyatomic semi-infinite crystals in magnetic field are studied.
本文研究磁场中弱耦合多原子半无限晶体中表面极化子的性质。
In the vacuum or infinite evenly charged dielectric materials, the field strength of its surface equals at all spots. And it has no relation with the distance of the field spots to the surface.
在真空或无限大均匀电介质中，无限大均匀带电平面的电场强度处处相等，和场点距离该平面的远近无关。
The preliminary research result of electromagnetic prospecting with the near field(transition region) of infinite-length line source in frequency domain is presented in this paper.
本文对频率域无限长线源近区（过渡区）测深的理论基础进行了探索性研究。
The preliminary research result of electromagnetic prospecting with the near field(transition region) of infinite-length line source in frequency domain is presented in this paper.
本文对频率域无限长线源近区（过渡区）测深的理论基础进行了探索性研究。
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