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1·An example of finding optimal damped ratio in second order underdamped control system is given.

以二阶欠阻尼控制系统的设计为例，优化出系统的最佳阻尼比。

2·The theoretical models for slug test include exponential decay model, underdamped model and nonlinear model.

斯拉格试验理论模型包括指数衰减模型、欠阻尼衰减模型和非线性模型。

3·We apply a Langevin model by imposing additive and multiplicative noises to study thermally activated diffusion over a fluctuating barrier in underdamped dynamics.

本文从一个由加性噪声和乘性噪声驱动的朗之万方程出发，研究了欠阻尼动力学系统涨落势垒作用下的扩散性质。

4·A new method of estimating damp ratio of a underdamped system is presented by calculating area ratio of two contiguous periods, which is applicable to experimentation.

提出了一种适用于实验测量欠阻尼系统阻尼比的方法，即通过计算相邻两个周期波形的面积之比来测定系统的阻尼比。

5·Abstract: We apply a Langevin model by imposing additive and multiplicative noises to study thermally activated diffusion over a fluctuating barrier in underdamped dynamics.

摘要：本文从一个由加性噪声和乘性噪声驱动的朗之万方程出发，研究了欠阻尼动力学系统涨落势垒作用下的扩散性质。