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).
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。
So, yes, and I should say, of course you can also use the gradient and other things like approximation formulas and so on and so far, it's just notation.
所以我这里要说一下，你也可以使用梯度，或者其他的公式，到目前我们只是学了这些新的记号方式。
Find the gradient. Find an approximation formula.
求梯度和近似公式。
Based on gradient algorithm and the fundamental approximation of feedforward network, a new supervised comprehensive training mechanism is put forward.
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。
The trackability limitation of current gradient algorithm is discussed. A new algorithm, named variable parameter gradient estimation algorithm with local polynomial approximation is proposed.
本文分析了梯度辨识算法跟踪时变系统的缺点，提出了一种新的基于局部多项式逼近的变参数梯度估计算法。
Since the gradient of the velocity is high in the mould, the control method of simulation points is applied in the least square approximation.
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。
Then by utilizing the features of this model an online optimization algorithm that combines policy gradient estimation and stochastic approximation is derived.
然后利用这种模式的特点，在线优化算法相结合的策略梯度估计及随机逼近而得。
Then by utilizing the features of this model an online optimization algorithm that combines policy gradient estimation and stochastic approximation is derived.
然后利用这种模式的特点，在线优化算法相结合的策略梯度估计及随机逼近而得。
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