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We thus see that Eq.(7. 44) can only be an approximate solution at best. 于是;我们看到;公式(7.;44)至多也只能是一个近似解。
Steihaug has shown that an approximate solution of the trust region problem may be found by the PCG method. 共轭梯度法由于不需要矩阵计算和存贮，成了解大型问题的首选方法。
This paper build a water quality prediction model in Taihu Lake on the base of 2-D riemann approximate solution model . 本文从浅水动力学模型研究现状和发展趋势出发并结合水环境规划管理的实际需要，分析研究了二维水流水质黎曼近似解模型。
The study shows that this approximate solution will yield relatively great errors in many cases. 研究表明，很多情况下这种近似解法将产生较大的误差。
They are far more amenable to approximate solutions. 对于求近似解来说，它们却好用得多。
Point that we not only find the approximate solution by using the perturbation method, but also can find the precise solution. 认为电场中带电谐振子用定态微扰的方法不仅可以求近似解，也可找到其精确解。
For the soil-pile-structure systems,an exact solution in time domain is developed to examine the validity of this approximate solution. 对于土-桩-结构系统，本文提出一种时域中的精确解法来考察这种近似解法的有效性。
The computation of approximate solutions was an extremely laborious task. 近似解的计算是极其繁重的工作。
A new flow rule was recommended, and it offered a new way for obtaining the approximate solution of the ultimate load with the theorem. 并建议了一种新的流动法则，对应用定理求极限荷载的近似解给出了新的解题思路。
In this paper, a method of finding stable approximate solution of nonlinear Abelian integral equation is given by using regularization method. 本文利用正则化方法给出了非线性阿贝耳积分方程稳定近似解的求法。
The first order approximate solution for the system s primary resonance is obtained by average method,and then it is verified by numerical simulation. 利用平均法研究了单自由度多频激励非线性汽车悬架系统的主共振,得到了一次近似解。
A two-dimensional mathematical model was provided for solidifying of liquid Aluminum with its approximate solution in liquid-solid clad rolling. 摘要本文给出了钢／铝液固相复合轧制中铝液凝固过程的二维数学模型及其近似解；
We can use this result to establish bounds on approximate solutions. 我们可以利用这个结果求出近似解的界限。
An approximate solution of a class of singular integral equation is given, the error and the possibility of the solution is analysed and proved. 给出了一类奇异积分方程的一种近似解法，并对其误差进行了分析估计，同时验证了该方法的可行性.
The nonlinear motion equations of the systems are derived and the journal orbits are determined as aPProximate solution of those equations. 推导出了系统的非线性运动方程，所求方程的近似周期解即为轴心轨迹。
By using the homotopic mapping method, a class of simplified nonlinear model is studied, and the approximate solution is obtained. 利用同伦映射方法,研究了一类简化型非线性模型。
Only approximate solutions may be obtained even in the best of circumstances. 即使在最佳的条件下，只能得到近似的解值。
Abstract: An approximate solution of a class of singular integral equation is given, the error and the possibility of the solution is analysed and proved. 文摘:给出了一类奇异积分方程的一种近似解法，并对其误差进行了分析估计，同时验证了该方法的可行性.
When this method is used for isotropic or mixed hardening, it is still exaet for radial loading, and is an accurate approximate solution for noa-radsal loading. 将它推广应用于各向同性硬化材料和混合硬化材料时,对于径向加载情况,此积分仍是精确解; 对于非径向加载情况,此积分是具有很高精度的近似解。
Moreover, it edits the calculating programs in both index Method,which gives the approximate solution and Simplex Algorithm,which gives the accurate solution. 设计了用指数法求近似解或单纯形法求精确解的算法程序。