程序中采用分层等梯度近似来描述海洋中的声速分布。
The programs adopt stratified constant-gradient method to approximately describe the sound velocity distribution.
运用密度泛函平面波赝势方法（PWP）和广义梯度近似（GGA），对替代式掺杂钒（V）的闪锌矿（ZnS）的超晶胞电子结构进行了计算。
The optical properties and electrical structure of V in ZnS supercell have been computed by means of plane wave pseudo-potential method(PWP) with generalized gradient approximation(GGA).
这一结论不仅与一些文献结果相吻合，而且说明用梯度塑性理论能够近似描述等间距现象。
The present conclusion agrees with some previous experiments. The gradient plastic theory can approximately describe the phenomenon of the same fracture spacing.
建立了偶极矩、核四极矩偶合常数中的场梯度及晶体非线性光学系数的近似理论表达式。
Approximate theoretical expressions are given for dipole moment, field gradient at the nucleus, and nonlinear susceptibility of crystals.
针对梯度功能压电复合材料球壳热弹性响应提出了简单而精确的近似解。
A simple and accurate approximate solutions of thermoelastic responses of functionally gradient piezoelectric composite spheres is developed.
利用优化函数的梯度阵和海森矩阵建立函数的二阶近似表达式在已确定的优化结果反向计算结构参数。
To reversely calculate structural parameters by using second-order approximate expression of the gradient matrix and Hessian matrix for optimization function in identified optimization results.
该方法是在辐射传递方程离散坐标近似的基础上，用求目标函数极小值的共轭梯度法进行反演计算。
The inverse problem is solved using conjugate gradient method of minimization based on discrete ordinates method of radiative transfer equation.
基于梯度算法和前馈网络所具有的普遍近似性质，提出了一种新的监督型多目标系统化训练机制。
Based on gradient algorithm and the fundamental approximation of feedforward network, a new supervised comprehensive training mechanism is put forward.
由于口模内速度变化梯度较大，采用最小二乘近似节点控制方法来控制近似效果。
Since the gradient of the velocity is high in the mould, the control method of simulation points is applied in the least square approximation.
为了解决这一问题，本文研究了减少噪声的力平衡梯度线圈的设计方法，并完成了洛伦兹力近似为零的线圈设计。
To avoid the generation of the noise, the design method of balanced Lorentz force gradient coils is studied and the gradient coils with cacelled net thrust force are designed.
为了解决这一问题，本文研究了减少噪声的力平衡梯度线圈的设计方法，并完成了洛伦兹力近似为零的线圈设计。
To avoid the generation of the noise, the design method of balanced Lorentz force gradient coils is studied and the gradient coils with cacelled net thrust force are designed.
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