The sensitivity matrix was calculated numerically by the finite difference method.
灵敏度系数矩阵是通过有限差分方法近似计算得到的。
Authors described and analyzed the finite difference method and finite element method.
作者阐述并分析了有限差分方法和有限元方法。
The finite difference method was used to discretize and solve the two phase energy equations.
采用有限差分法对两相能量方程进行离散求解。
Using the finite difference method we calculate the distribution of the electromagnetic field.
利用有限差分法实现了其正演计算，获得了电磁场的分布。
In this paper, the finite difference method is mainly used in solving the model equations of smoke.
在求解烟雾模型方程时，本文主要采用有限差分法。
The finite difference method for compressible miscible displacement in porous media is considered in the paper.
本文讨论了多孔介质中完全可压溶混驱替问题的特征—差分方法。
Applying the finite difference method to solve mathematics model of the well tests, and the central difference method is used.
应用有限差分法对试井的数学模型进行求解，采用中心差分。
When the curvature is 0, we found that the difference between the phase field method and the finite difference method is very small.
我们发现与有限差分法相比较，在曲率为0，即边界为一条直线的时候，两者的差别很小。
The equation was solved with the finite difference method and the variation of the temperature in the insulation layer was concluded.
采用数值差分法可以求解出绝热层内部温度变化规律，从而推出储罐内液体的温度和压力的变化规律。
The temperature distributions in the diode-side-pumped slab laser medium have been calculated by means of the finite difference method.
用有限差分法对二极管侧泵浦板条激光介质的温度分布作了数值计算。
Applying the finite difference method, the numerical simulation of the surface charge density of a finite conductor stick is presented.
利用有限差分法对有限长导体棒电荷面密度进行了数值模拟。
Using the finite difference method, the state equation of the transverse vibration of an axially moving rectangular membrane is derived.
利用有限差分法，导出了轴向运动矩形薄膜横向振动控制系统的状态方程。
Compared with the finite difference method, this method has the features of cleavability in physical concept and simplicity in algorithm.
与有限差分法相比，有限容积法具有物理意义明确、算法简单等优点。
In solving partial differential equation (i. e. pricing model), the author adopted the finite difference method to get its numerical solution.
本文采用有限差分法求解偏微分方程(即定价模型)的数值解。
The finite difference method is used to create the basic equation of one dimensional consolidation of layered ground considering construction loads.
采用变空间步长的有限差分法，求解了多层地基考虑施工期加荷过程的一维固结问题。
The results of the precise integration method agree well with the theoretical solution and have higher precision than those of the finite difference method.
数值算例表明，用精细积分法得到的解与精确解十分吻合，比有限差分法具有更高的精度。
Secondly, by the finite difference method and two-parameter method, this study derives the calculation on the inter force and displacement of the anchor piles.
其次，引入有限差分法与双参数法，考虑桩底的几种约束情况，推导了锚索桩内力与位移计算方法。
In this paper, the shear transverse distribution on the beams of bridge is researched using data of model tests and computation in the finite difference method.
本文通过模型实验和有限差分法电算，对桥跨结构主梁剪力横向分布进行了研究。
In solving the mathematical model, two time-saving and effective numerical methods have been tested and compared with the finite difference method commonly used.
对动态数学校型的数值求解，试验了两种颇为有效的方法，并将这两种方法和常用的有限差分方法作了比较。
The finite difference schemes of the seepage mathematical model are obtained by the finite difference method; and the numerical simulation software is developed.
利用差分方法得到该模型的数值差分格式，在此基础上编制模拟软件。
The velocity distribution in the oil ducts is estimated by network method and temperature distribution in the winding is estimated by the finite difference method.
文中介绍了用网络法计算油流槽道内速度分布与用有限差分法计算线饼内温度分布。
This paper describes the three dimensional numerical analysis of current gain for the lateral transistor with multiple collectors by using the finite difference method.
本文叙述了用有限差法对多集电极横向晶体管电流增益进行三维数值分析。
The finite difference method (FDM) is used in the numerical calculation. Fielddistribution at particular time and field at one point as a function of time are displayed.
数值计算采用了有限差分法，可算出某时刻厚板边缘散射场的分布和某点声场随时间的变化。
Verification calculation of transient temperature and stress distributions were performed with the finite difference method, and the results coincided with the measurements.
并用有限差分法对瞬态温度场与热应力进行了校核计算，其结果与实测完全吻合。
The mathematical model of fluid percolation and rock deformation of fluid-solid coupling is solved with the finite difference method and the finite element method respectively.
分别采用有限差分法和有限元法对流固耦合流体渗流数学模型与岩石变形数学模型进行了求解。
The analysis show that the finite difference method based on the free boundary problem and the Laplace method based on the free boundary problem are two good numerical methods.
数值实验结果表明：基于自由边界问题的有限差分法和基于自由边界问题的拉普拉斯变换是两种良好的数值方法。
Through the numerical example given in the paper, the conclusion was demonstrated that the present method has superiority in accuracy compared with the finite difference method.
通过数值算例，对比了本文方法与有限差分法得到的结果，表明差分法只有当增量步很小时才能够达到本文方法的精度。
Through the numerical example given in the paper, the conclusion was demonstrated that the present method has superiority in accuracy compared with the finite difference method.
通过数值算例，对比了本文方法与有限差分法得到的结果，表明差分法只有当增量步很小时才能够达到本文方法的精度。
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