谐振子在周期运动中是特别重要的。
The harmonic oscillator is an exceptionally important example of periodic motion.
裂纹深度的加大降低了系统周期运动的稳定性。
The stability of the periodic motion decreases as the depth of the transverse crack on the rotating shaft increases.
当转速超过某值时，混沌运动将激变为周期运动。
When the speed exceeds some value, the chaotic motion suddenly changes into periodic motion.
在临界转速区，系统响应为周期运动，振幅相应增大。
Within the supercritical speed range, the response of the rotor is periodical motion with the increase of amplitude.
宇宙的周期运动是同样的，从一个时代到另一个时代往返不已。
The periodic movements of the universe are the same, up and down from age to age.
研究了一类单自由度分段线性系统周期运动的分岔和混沌现象。
Bifurcation and chaos of periodic motions of a single-degree-of-freedom system with piecewise-linearity is studied.
结果表明：罐内液体的晃动是长周期运动，并且是多阶振型的组合。
The result shows that the liquid sloshing appears as long period and combination of multi-modes.
应用胞映射方法研究了系泊海洋生产平台的周期运动及其倍周期分岔。
Cell-to-Cell Mapping Method was used to study the periodic orbits and period-doubling bifurcations of a moored ocean production platform subjected to waves.
此时隧穿表现出振幅衰减的准周期运动，同时会出现所谓的ESD现象。
We show that the tunneling exhibits the property of quasiperiodic with damping amplitude, at the same time the so-called ESD appears.
其中长周期运动控制律设计时，结合了喷气推力控制来辅助偏置动量控制；
When design the control method of long-time cycle movement, whiff thruster is used to assistant the control system.
对于稳定的周期运动，由于增加了系统的阻尼耗散项从而减少了振荡幅度。
Stable periodic motions such as wing-rock and oscillatory spin tend to be suppressed or the amplitudes be lessened due to the rotational damping of the unsteady aerodynamic delay.
一个例子是周期运动，如一个带有自旋和磁矩的粒子在恒定磁场中的进动。
An example is periodic motion, such as the precession of a particle with intrinsic spin and magnetic moment in a constant magnetic field.
给出了导致骑浪发生的危险临界参数值，以及周期运动和骑浪运动区域划分。
The dangerous value of control parameter which leaded to surf-riding and the domain of periodic motion and surf-riding were given.
非线性动力学系统中由拟周期运动走向混沌的道路在理论上已为人们所公认。
The route of transition from quasi-periodicity to chaotic motion in nonlinear dynamical systems has been well accepted theoretically.
提出了一种精确有效的数值算法，用以确定谐波激励下的分段线性振子的周期运动。
This paper presents an efficient numerical scheme for calculating the periodic motion of a harmonically forced piecewise linear oscillator very accurately.
目的：探讨周期运动过程中桡动脉横切面轴心到皮肤距离的动态变化与脉位的关系。
Objective: to study the relationship between pulse position and dynamic variation of distance from transverse section centroid of radial artery to skin during a cardiac cycle.
周期运动的稳定性与分叉研究可以为冲击振动落砂机的动力学优化设计提供理论依据。
The system parameters of shaker may be optimized by studying of stability and bifurcation of periodic impact motion of shaker.
对具有反应扩散及周期运动的神经网络的定性性质的分析具有广泛的理论和应用价值。
So it is worthy of analysis the qualitative properties of reaction diffusion system and periodic system.
最后对国产某飞机的纵向短周期运动系统的分析说明本文的模型是合适的，方法是有效的。
The obtained results are employed to analyze longitudinal motion of an aircraft made in China. The analysis shows that this model is proper and the method is effective.
评价结果表明：泾河流域水资源自然再生能力在年内时间尺度上存在明显的准周期运动规律。
The assessment results indicate there are quasi cycle motion law of natural water resources renewability of Jin river basin in the time scale in years.
利用频谱分析法对周期运动和混沌运动进行判断，并对嵌于不同混乱带中的周期轨道进行区分。
By using the frequency analysis method the periodic motions and chaotic motions are judged, and the periodic orbits embedded in different chaotic bands are distinguished.
裂纹转子轴刚度变化对油膜失稳点及油膜失稳之后转子的运动影响不大，转子系统作拟周期运动。
Stiffness change has little effect on the critical instability and motion of the cracked-rotor, and the system motion is quasi-period motion.
结果表明：随着质量偏心的增加，弯扭耦合区的范围增大，系统运动由周期运动变为概周期运动；
The results show that the coupled bending-torsional vibration range increases and the motion changes from periodic motion to quasi-periodic motion as the mass eccentricity rises;
采用输出变量反馈线性化控制律及其局部线性化将混沌姿态运动控制为给定的静止状态和周期运动。
The input_output feedback linearization method and its modified version are respectively applied to control chaotic attitude motions to the given attitude rest and the periodic motion.
采用输出变量反馈线性化控制律及其局部线性化将混沌姿态运动控制为给定的静止状态和周期运动。
The input_output feedback linearization method and its modified version are respectively applied to control chaotic attitude motions t.
分析表明，系统除了具有各种形式的周期运动、拟周期运动外，还具有丰富的混沌运动与分叉现象。
The equations are calculated numerically and the results are analyzed. The results reveal that the system possesses varied chaotic motions and bifurcation phenome…
通过对机械式离心调速器系统增加一个延迟反馈控制器，利用它控制系统从混沌运动转化为周期运动。
A method of controlling chaos by employing a delayed feedback controller is developed to guide chaotic motions towards regular motions.
最后以船舶机械非线性隔振系统为例，分别分析了该改进方法在系统呈现周期运动和混沌运动时的应用。
Finally, the periodic and chaotic motions of a nonlinear vibration-isolation system for on-board machinery are investigated.
激光多普勒测振技术具有在频域上对微结构瞬态运动进行分析的优点。是时域上周期运动测试的重要补充。
Laser Doppler vibrator has an advantage of analyzing the motion in frequency domain, and it is the complementarity of measuring periodic motion in time domain.
在分析周期运动的稳定性时，采用谐波平衡方法，得到转子周期运动的稳定条件，为工程设计提供了一定的依据。
To study the stability of periodic motions the harmonic balance method is used. The condition for the stability of periodic motions can provide a theoretical basis for the design of rotor systems.
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