本文应用微分方程的定性方法，给出具有间隙动力系统产生自激振动的一个充分条件。
In this paper, the sufficient condition for self-excited oscillation of dynamic systems with gap is given by using qualitative method of differential equations.
研究了双幅激振自同步椭圆振动系统的同步性条件和同步状态稳定性条件。
In this paper, we discussed the synchronism conditions and the synchronous state stability condition of the self-synchronous ellipse vibrating system with dual amplitudes exciting.
对双电机实现自同步直线激振的进一步分析和推导，给出自同步原理和同步性条件；
The paper further analyses the mechanism of double motor linear excitation. This chapter establishes the principle of the realization of auto-synchronization and the condition of auto-synchronization.
机床的切削效率往往不是由机床的功率、机床所能承受的最大载荷所决定，而是由机床切削时发生自激振动的条件所决定。
It is well-known that machining efficiency doesn't depend on the machine power and the load which machine can bear, but depends on the condition in which self-excited vibration appears.
本文用非线性耗散理论研究第二类条件不稳定下的自激加热的热带低压、台风系统。
A highly truncated spectral model is used to study the self-exciting heating, dissipation and nonlinear action in the typhoon depression system.
本文介绍和探讨了车床主轴组件在不发生自激振动条件下的刚度校核方法，编制了校核主轴组件刚度的计算机程序。
This paper, based on Self-excited vibration not taking place, introduce and probe into the method of checking the rigidity of spindle System of lathe. The program checking the rigidity is given.
本文介绍和探讨了车床主轴组件在不发生自激振动条件下的刚度校核方法，编制了校核主轴组件刚度的计算机程序。
This paper, based on Self-excited vibration not taking place, introduce and probe into the method of checking the rigidity of spindle System of lathe. The program checking the rigidity is given.
应用推荐