The influence lines method of the conversion pile loads is an approximate calculation means which is basically consistent with the exact method.
换算桩法是一种与精确解法基本相一致的近似计算法。
An accurate linear damping calculation formula for free vibration system has been deduced and the application limits of the corresponding approximate calculation formula has been discussed as well.
本文推导出了自由衰减系统线性内耗准确计算公式，并讨论了原有的自由衰减系统线性内耗近似计算公式应用范围。
Using the comparison method, an approximate approach to the delay-differential equations is proposed in this paper. The proof of its convergence and calculation stability is also given.
本文应用比较方法，提出滞后型泛函微分方程初始问题的近似解法，给出了解的近似迭代序列及其误差估计式，并证明迭代序列的收敛性和计算稳定性。
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