多体系统进行数值仿真时，很多选择了微分代数混合方程作为多体系统动力学数学模型。
The differential-algebraic equations are often chosen as the mathematical models of the dynamics of multibody systems in order to achieve the numerical emulation for the multibody systems.
提出了一种求解微分代数混合方程组的统一算法，证明了统一算法所求出的懈与原方程组的解具有等价性。
This article present an unification arithmetic for a kind of mixture equations made up of some differential and algebra equations.
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