| 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. | 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。 |
| 7. | 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。 |
| 8. | 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。 |
| 9. | 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。 |
| 10. | 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。 |
