And I'm going to slide down m that track an object mass m, and I'm going to evaluate the oscillation along a perfect circular track.
我准备在轨道上滑下，物体，我要求出，绕轨道一周的，震荡时间。
2
The single standing wave mode in a circular cylinder subjected to a vertical oscillation was studied by employing two-time-scale perturbation expansions.
本文利用奇异摄动理论的两时间变量展开法，研究了垂直强迫圆柱形容器中的单一水表面驻波模式。
3
The jet is controlled by a circular vortex chamber, and self exited oscillation occurs due to a pressure difference between the left and right parts of vortex chamber.