periodic time

After irrigation, with varying of the temporal hour soil matric potential follows periodic increase and decrease regularity, Its charging periodic time is 24-hours.

灌水之后土壤基质势随时间的变化遵循周期性增减的规律，其变化周期为24h。

Because of the meshing stiffness of a gear pair, the governing equation denotes a linear dynamic system with periodic time-varying coefficient.

由于齿轮副啮合刚度的影响，动力学方程式代表了一个具有时变系数的线性动力系统。

Early fault forecasting based on almost periodic time-varying autoregressive model

基于几乎周期时变AR模型的故障早期预报

This dissertation considers the problem of adaptive leaning tracking control for nonlinear systems with periodic time-varying parameters.

研究了周期时变参数非线性系统的自适应学习跟踪控制问题。

Dynamic analysis of the linear periodic time-varying vibration system based on complex mode theory

基于复模态理论研究线性周期时变齐次系统的动态特性