根据一阶拟线性偏微分方程组的特征理论，讨论内弹道两相流方程组的类型。
Following the theory on characteristics of first order quasi-linear partial differential equations, classification of the balance equations for two-phase flow in interior ballistics is discussed.
锚泊线的运动方程是一组高非线性的偏微分方程组，求解困难。
The dynamic equation of motion chain is a group of high non-linear differential equations, the solution is difficulty.
在小变形情况下，运用伽辽金方法，可将偏微分方程转换为线性常微分方程组进行求解。
A set of linear ordinary differential equations in the case of sm all deflections is determined by application of the Galerkin's method.
应用推荐