finite-difference method造句

例句与造句

1. We will say that a finite-difference method is convergent if this condition is satisfied .
   若满足了这个条件，我们就说有限差分法是收敛的。
2. Measurement of marine sediment and modeling acoustic wave with a finite - difference method
   海底沉积物声波现场测试和有限差分数值模拟研究
3. Temperature field analysis of concrete filled circular steel tubes in fire by finite - difference method
   四面均匀受火下圆钢管混凝土温度场非线性分析
4. It may serve as effective finite - difference method s for hyperbolic conservation laws
   本方法使用方便，易于推广，是求解双曲型守恒律非常有效的差分方法。
5. Prestack migration is performed by reverse - time migration method based on maxwell ' s equations using time - domain finite - difference method
   叠前偏移用时间域有限差分求解麦克斯韦方程组的逆时偏移方法实现。
6. It's difficult to find finite-difference method in a sentence. 用finite-difference method造句挺难的
7. The authors first infered the boundary condition for line source , then realised the forward calculation with finite - difference method
   针对垂直有限线源，首先推导了线电流源的边界条件，利用有限差分实现了三维地电场的正演。
8. The heat transfer of the wall and the internal thermal mass is considered in this model . the control equation can be solved by an implicit finite - difference method
   利用有限差分方法对该数学模型得到的控制方程组进行离散,并对离散得到的差分方程的计算求解过程进行了编程。
9. The test results demonstrate that this new finite - difference method can be efficient and sufficiently accurate . it may also be an effective and robust tool in other areas involving the numerical computation of partial differential equations
   实验的结果表明，本文的方法具有高效、精确、实用的特点，并且可以推广应用到其他涉及偏微分方程数值计算的领域，具有广阔的应用前景。
10. Firstly , much effort is put into the theoretic analysis and numerical algorithm research . to calculate the mode profile of soi rib waveguide with jumps in the refractive index , a new full - vectorial finite - difference method ( fdm ) based on the lagrange interpolation of the field is presented
    由于soi材料中作为波导芯层的硅折射率很大，与作为包层的sio _ 2之间有很大的折射率差，这势必对模拟数值算法的精度和边界处理等方面提出了更高的要求。
11. Compared with the conventional finite - difference method on the fixed grid - size rectangular grids , the new method can be more cost - effective in complex models . numerical tests for both seismic modeling and reverse - time migration are performed on various theoretical models and a physical experiment
    用该剖分方法得到的网格在各速度层内的空间步长是不同的，而全区域上的时间步长却近于恒定，因此在复杂模型上，本文方法的计算效率要高于传统的矩形网格差分方法。
12. In chapter 2 , the first and the second section give explicit explanations of how to use split - step fourier transformation ( ssft ) algorithm and finite - difference methods to solve nonlinear equation . a code table , in which a list of normalized transmission formula is included , is given to facilitate programming
    第二章，前两节详细介绍了如何用分步傅里叶变换算法和有限差分法实际求解非线性方程，并给出了求解光束、脉冲及脉冲光束的归一化方程编码表，供编程参考。
13. In the procedure , the column is first divided into a finite number of small segments in equal length . the deflection - curvature relation of each segment is determined using the finite - difference method . the final nonlinear algebraic equations are then obtained by means of the equilibrium condition for each segment
    运用这种方法时，先将长柱离散成若干等长的柱段，利用差分方法求得各柱段截面上的挠度与曲率的关系，再根据各截面上力及力矩的平衡条件，得到一组关于荷载与变形关系的非线性代数方程组，本文采用曲率增量法求解该方程组。
14. In the procedure , the column is first divided into a finite number of small segments in equal length . the deflection - curvature relation of each segment is determined using the finite - difference method . the final nonlinear algebraic equations are then obtained by means of the equilibrium condition for each segment
    运用这种方法，先将长柱离散成若干等长的柱段，利用差分方法求得各柱段截面上的挠度与曲率的关系，再根据各截面上外力与抵抗力的平衡条件，得到一组关于荷载与变形关系的非线性代数方程组；本文对该方程组采用载荷增量法进行迭代求解。
15. In order to simulate the electro - optical performance of a liquid crystal cell an iterative finite - difference method is proposed in the present thesis to calculate the distribution of lc directors under an applied voltage . this new method is very stable and simple , and can give accurate results quickly as compared with the existing methods . when the parameters of a lc cell are unknown , a new model with three characteristic parameters is introduced to predict the electro - optical performance of the lc cell
    本论文在液晶光器件的模拟计算方面，提出了液晶指向矢空间分布求解的新型算法，与已有算法相比较，具有简单稳定、精度高和通用性强的优浙江大学博士学位论文点;对于液晶材料参数未知的情况，提出了用于预测液晶盒电光特性的新型近似模型，分析了己有模型的参数确定问题，新模型提高了在预测不同厚度下液晶盒电光特性的精度;提出了液晶光波传输2x2扩展琼斯矩阵的简便形式。
16. A hybrid migration method , named " fourier finite - difference migration " , is a post - stack depth migration scheme . the downward extrapolation operator is split into three operators : one operator is a phase - shift operator for a chosen constant background velocity , another operator is the well - known first - order correction term , and the third operator is a finite - difference operator for the varying of the velocity function . phase - shift downward extrapolation and finite - difference downward extrapolation preserves the advantage of phase - shift method and finite - difference method
    傅立叶有限差分(简称ffd )偏移算法是一种叠后深度偏移算法，其向下延拓算子是一种混合算子，包括三项：一项是处理常速的相移算子，一项是一阶相移修正算子，最后一项是类似45度方程的有限差分算子，用来处理剧烈横向变速。
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