The governing equation of the coupled stiffness problem is derived after partition.

给出分解后耦合问题的控制微分方程；

The nonlinear governing equations of the system are derived from the Lagrange equation.

由拉格朗日方程导出系统的非线性控制方程。

The governing equation is 3D Euler equations, which is solved by the finite volume method.

利用再生核理论和有限差分法给出了一种计算欧拉方程组的新方法 。

The governing equation of a gear system with time-varying meshing stiffness is established.

建立了具有时变啮合刚度的二级齿轮系统的动力学方程式。

This is the governing equation, where the thermal conductivity is a function of temperature.

这就是基本方程，其中导热系数为温度的函数。