考虑一类非守恒形式的对流扩散边值问题。
In this paper, we consider a nonconservative convection-diffusion boundary value problem.
采用了体积守恒形式的连续性方程，以防止由于气液两相密度差大而引起的数值求解中的不收敛现象。
The continuum equation with conserved volume type was used to avoid divergence because of the big difference in density between gas and liquid.
这就为研究激光的工作人员出了一个难题：如果能量输出有两种形式，他们怎样运用电荷守恒和能量守恒定律呢？
This posed a conundrum for researchers working with the laser: How were they to apply the laws of conservation of charge and conservation of energy with two forms of energy output?
能量在其任何形式都是守恒的。
本文从安培环路定理、高斯定理及电荷守恒定律出发导出了位移电流的具体形式。并对位移电流作了简单的讨论。
Based on the ampere return circuit theorem, gauss theorem and charge conservation law the concrete form of displacement current is derived. The displacement current is discussed.
能量守恒定律也获得简单的形式。
本文由力学的普遍原理——虚功原理推导出了三维情况下J积分守恒的一般形式；
The general form of J-integral conservation law in three dimensions has been derived from the principle of virtual work.
介绍了在非惯性系中建立动力学方程的方法，惯性系中拉格朗日方程在非惯性系中的转换形式，以及非惯性系中的能量定理和能量守恒定律的应用等研究成果。
Recent trends in the Lagrange equation's conversion and form from inertial system to non-inertial system, the application of energy theorem, energy conservation law, etc. are introduced.
这方法以积分形式的通量守恒方程作为问题的数学模型。
The equations of conservation of flux is adopted as the mathematical model for the problem.
本文从安培环路定理、高斯定理及电荷守恒定律出发导出了位移电流的具体形式。
Based on the ampere return circuit theorem, gauss theorem and charge conservation law the concrete form of Displacement current is derived.
本文不但基于能量守恒原理推得了变量流的基本微分方程序，而且对其水流剖而形式及流态作了分析。
In this paper not only the equation based on the conservation of energy is derived, but also the flow profile and the states of flow are analyzed.
目的建立平面准晶中能量型路径守恒积分及其对偶形式，并确定准晶裂纹体裂尖应力奇异性阶数。
Aim to establish the path independent integral and its dual form of energy type, and to determine the singularity order of stresses near the crack tip in plane quasicrystals.
之后，将格式按分量形式推广到二维非线性双曲型守恒方程组。
The extension to the two-dimensional nonlinear hyperbolic conservation law systems is straightforward by using component-wise manner.
在文中引入了扩展全空间概念，由此得到电荷守恒和电流守恒的一般形式。
This paper introduces the concept of extended total space, and then we extend conservation of charge and conservation of current to general case.
其次，给出结构方程和守恒量的形式。
Next, the structure equation and the form of conserved quantities were obtained.
有限体积法是一种离散积分形式守恒律的数值方法。
Finite volume method is a numerical method that discretizes the conservation laws in the integration form.
得到确定方程、限制方程、结构方程以及守恒量的形式。
The determining equations, the restriction equations, the structure equation and the form of the conserved quantities were obtained.
用动量守恒定律和数学中等差级数的极限证明了火箭速度公式的两种形式是一致的。
By adopting the momentum conservation theorem, perforation of truncated oval-nosed projectile into stiffened plates was investigated.
得到形式不变性导致守恒量的条件以及守恒量的形式，并给出三种特殊情形下的推论。
The condition under which the form invariance can lead to a conserved quantity and the form of the conserved quantity were deduced, and three corollaries in special cases were given.
利用拉格朗日方法并结合系统动量守恒关系，分析、建立了漂浮基双臂空间机器人完全能控形式的系统动力学方程。
Combining the relationship of the linear momentum conversation and the Lagrange approach, the full-controlled dynamic equation of space-based robot system with dual-arms were analysed and established.
基于混合形式的Richards方程以及一种质量守恒的有限差分格式，编写了一个VBA程序以对饱和-非饱和流排水实验进行数值模拟。
Based on the mixed-form of the Richards equation and a finite difference scheme, a VBA program is developed to perform the numerical simulation of the saturated-unsaturated flow drainage experiment.
基于混合形式的Richards方程以及一种质量守恒的有限差分格式，编写了一个VBA程序以对饱和-非饱和流排水实验进行数值模拟。
Based on the mixed-form of the Richards equation and a finite difference scheme, a VBA program is developed to perform the numerical simulation of the saturated-unsaturated flow drainage experiment.
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