近似方程 meaning in English
approximate equation
Examples
- Especially , the second part of the computing the backscattered field is given . 5
在利用kirchhoff远场近似方程计算后向散射系数时,给出了计算该公式第二部分的方法。 - Since using forth - order approximations , they save computer storage and are convenient to implement
由于采用四阶近似方程，在保证计算精度的前提下，该方法具有节省计算工作量和易于实现的特点。 - The main achievement of the paper is that the nnlse is simplified to a linear equation . it is found that we can controll a weak beam ' s phase to experience a very large phase shift within a rather short propagation distance by modulating the input power of a stronger soliton beam
本论文的主要贡献是：把光束的传输方程nnlse简化成一线性形式的近似方程，发现可以通过调节强孤子光束的功率来控制另一弱光的相位并能使之在极短的传输距离内产生大的相移。 - And beginning with a perturbed nls equation , using a multi - scales perturbation expansion , we get the zero order and the first order equations , discuss the eigenstates of the operator in the equations , induct relevant " derivative states " , form the completeness of the bounded eigenstates of the associated operator in li space , and expand the corresponding parameters in the closure , get a series evolution equations of the coefficients in the expanded formulas , find the first order approximate solution by researching the evolution equations . this paper also gives the basis of this method - the completeness we have formed and the singular perturbation technique
) dinser方程的求解问题，讨论了自伴算子的本征函数的正交性和完备性，介绍了寻求微分方程的近似解常用的摄动方法，并从带有某种扰动项的nls方程出发，利用多重尺度的摄动方法得到了方程的零级近似方程和一级近似方程，通过对近似方程中算子的特征态的讨论，引入适当的“导出态” ，建立了算子在l _ 2空间的特征态的完备性。