对于多自由度定常约束微振力学系统的数学建模有许多方法，但这些方法不是受到使用条件限制就是计算繁琐，并且不适合于计算机建模。
Although there are many methods of building mathematical model for permanently constrained discrete system, the methods are usually toilsome and not convenient for computer modeling.
对于多自由度定常约束微振力学系统的数学建模有许多方法，但这些方法不是受到使用条件限制就是计算繁琐，并且不适合于计算机建模。
Although there are many methods of building mathematical model for permanently constrained discrete system, the methods are usually toilsome and not convenient for computer modeling.
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