Closed form kinematic equations of main feed mechanism are established, one and two order effect coefficient matrixs are derived.
建立了主进给机构的封闭形式的运动学方程，导出了一、二阶运动影响系数矩阵。
2
It is meaningful to study solutions to closed boundary value problems for equations of mixed type, which is closely related to physical phenomena.
混合型方程的封闭边界值问题的解的研究是很有意义的，它与物理现象紧密联系在一起。
3
Generalized DAlembert-Lagranges principle for non-holonomic mechanics, including its Newtons formulation and Lagrangian formulation, are given. This principle can lead to the closed motion equations.