本文在使用多余力作为状态变量的分解原理的基础上，应用动态规划与力法结合的方法，对于桁架结构，建立了动态规划的递推函数等式。
Based on the decomposition principle using redundant forces as state variables, this paper applies the method combining the dynamic programming with the force method to the truss structure.
结果表明，融入时效函数的自适应递推优化组合预测模型比采用其它预测模型预测的结果更好。
The results show the self-adapt optimized combination forecast model covering the aging function is better than the other forecast models for gas demand forecast.
本文利用母函数和递推关系求解一般高阶等比序列，得到了这类序列的一般解。
In this paper, the general high order equal ratios sequence have been studied by generating functions and recursion relations.
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