Find the gradient. Find an approximation formula.
求梯度和近似公式。
But, it's the usual approximation formula using the derivative.
但都是使用导数的逼近公式。
In fact, it still works in the general case using this approximation formula.
事实上，在一般情形做近似时，之前的结论仍然适用。
The value which was calculated using this approximation formula of pulse duration was close to that of solving the rate equations by computer.
使用脉宽表示式计算的结果与计算机数值计算相符。
The prediction formula of yearly production and the approximation formula for reduction between the instantaneous production and yearly production are also presented.
给出了年产量预测公式及瞬时产量与年产量相互换算的近似公式。
In this paper, a approximation formula of SF6 saturated steam pressure curve is proposed, and the accuracy of the formula is verified by comparing with the standard curve.
提出了一种新的SF6气体饱和蒸汽压曲线的拟合公式，并和标准曲线数据加以比较，确认了其准确性；
In this paper, a approximation formula of SF6 saturated steam pressure curve is proposed, and the accuracy of the formula is verified by comparing with the standard curve.
提出了一种新的SF6气体饱和蒸汽压曲线的拟合公式，并和标准曲线数据加以比较，确认了其准确性；
应用推荐