In the general method the absorption rate is found out by solving differential equations.
在一般方法中，使用了微分方程求解吸收速率。
2
An invariant formula for the right stretch tensor rate is given by a differentialmethod directly.
利用直接求微分的方法，给出了右伸长张量率的不变性表示公式。
3
Locally implicit finite element method is a satisfactory numerical method to solve non-linear partial differential equations for its unconditional stability and its high rate of convergence.