结果表明，叠加周期振动可以抑制系统的混沌。
The results show that the chaos can be restrained by superposing a periodic vibration.
月平均海面以年周期振动为主，其次是半年周期。
The seasonal sea level change is of annual period and the second oscillation is of semi-annual period.
给出一类强非线性对称振子周期振动的一种解法。
The influence of translational kinetic energy on the period of vibration is analyzed.
爆炸震源的地震纵波是脉冲性质的。周期振动是地震脉冲引起的次生振动。
A primary seismic wave from an explosive source is a pulse response, and its periodic vibration originates from seismic pulses.
典型尺度的雷暴低空风切变以长周期振动频率激励飞机，使其偏离预计下滑航迹。
A typical low-level wind shear of thunderstorm activates long periodic oscillation of an aircraft, causing tracking deviation of the aircraft.
结果表明，通过这两种方法，可以控制系统的混沌运动而得到稳定的周期振动结果。
The chaotic motions of the system can be successfully converted to the stable periodic orbits after the two methods were used to control chaos.
结果表明，通过这两种方法，可以控制系统的混沌运动而得到稳定的周期振动结果。
The result indicated that the chaotic motions of the system can be successfully converted to the stable periodic orbits after the two methods were used to control chaos.
在顺流向初应力为压应力状态下，系统存在非周期响应，如概周期振动及混沌运动。
When the initial stress is pressure stress, more complicated responses such as almost-periodic solutions and chaos motion are found in the system.
与沙化有关的气象要素表现出明显的周期振动，周期长度为2—4年和6—8年不等。
There exists a significant periodical oscillation in the meteorological factors related to desertification, with its duration varying from 2-4 to 6-8 years.
分析表明，系统除具有各种形式的周期和概周期振动以外，还具有丰富的混沌运动与分叉现象。
It is indicated that besides periodic and quasi periodic vibrations the system shows different forms of chaotic motion and bifurcation phenomena. Chaotic motion and various related...
在正弦风切变假定下，利用计算机计算和飞行模拟器模拟研究了长周期振动频率上下的正弦波风切变对飞机着陆航迹的影响。
On the assumption that the wind shear is sinusoidal, the effects of long periodic oscillation on the landing path of an aircraft were studied by computer calculation and with flight simulator.
在第24个周期开始前，人们通过太阳的扭转振动的位置和强度准确的预知了第24周期内太阳黑子活动的推迟。
Before cycle 24 commenced, the position and strength of the torsional oscillation correctly predicted the late arrival of this cycle's sunspot activity.
而一个振动向上的回归周期迄今为止还没有机会出现。
A return cycle upwards in vibration had no opportunity to manifest until now.
二元周期的结束的最大必要性意味着去除黑暗势力，并且像任何其他的灵魂一样，他们会找到与他们当下存在振动相匹配的实相去继续经历。
The end of duality must of necessity mean the removal of the dark Ones, and like any other soul they will find themselves moving into a similar vibration to their present one.
本文对周期波导中波传播与振动局部化的分析方法和计算结果可用于结构的优化设计。
The method and results in this paper for solving the problem of wave and vibration mode localization in periodic wave guide can be used in the optimum design of such kind of structure.
基于弹性波传递矩阵方法，研究了失谐周期结构中弹性波与振动的局部化问题。
Based on the method of wave transfer matrix, the elastic wave and vibration localization in disordered periodic structures is studied.
以叶片—轮盘结构为例，研究了循环周期结构的振动模态局部化问题。
By taking example for bladed disk assembly, the localization of vibration mode in cyclic periodic structures is studied.
对向量值缓慢振动函数及遥远概周期函数的性质作了讨论。
The properties of Vector-valued remotely almost periodic function and oscillate slowly function are discussed.
并对影响粘滑振动幅值和周期的主要因素进行了讨论。
And the main factors influencing the amplitude and period of the stick-slip vibration are discussed.
提出了振动周期控制采用模糊控制的技术路线，设计了参数因子在线自整定的模糊控制器。
The technical route of using fuzzy control for control of vibration cycle is put forward, and a fuzzy controller whose parameters can be optimized on line is designed.
本文介绍通过检测机器的振动周期来间接测定封闭式压缩机转速的方法。
This paper discusses the method of determining the rotational speed of a full-closed compressor by means of measuring its machinery vibration period.
频率微扰商是表示连续元音发声时声带振动相邻周期间的微细变动量； 发声效率反映平均气流率与声能的有效转换率。
PP indicates the amount of irregular vibration of vocal folds and I/F represents efficient transition from MFR to acoustic energy.
分析了惯性秤水平、垂直和倾斜放置时，重力对惯性秤振动周期的影响。
When the inertial balance is put into horizon, verticality and incline, the influences of gravity on vibration period of inertial balance are discussed.
为评估随机成分对设备的影响，需要将周期成分从振动信号中去除。
To evaluate the influences of the stochastic component on apparatus, it is necessary to remove the periodic components from the vibration signal.
本文阐述了回转周期结构振动特性分析的有限无法。
The finite element method for vibration characteristic analysis of periodical gyro-structures is described in this paper.
存在不平衡量时，系统失稳可能产生拟周期分岔、倍周期分岔并可能导致混沌振动。
The instability of the unbalanced system motion may result in doubling period bifurcation, almost periodic motion and chaotic motion.
应用第一类完全椭圆积分求出了非线性振动周期的精确解。
The exact solution of the period is got by using the first kind of complete elliptic integral.
轴系扭振的模态对数衰减率正比于每个振动周期耗散的能量与峰值应能的比值。
This logarithmic decay ratio of the shaft set is in direct proportion to the ratio of the energy dissipated per cycle to the peak strain energy.
在实验中就要测定单摆的摆长，然后测定此摆长时的振动周期。
So in experiment we should measure the length of single pendulum, then get the period of oscillation in this condition.
在实验中就要测定单摆的摆长，然后测定此摆长时的振动周期。
So in experiment we should measure the length of single pendulum, then get the period of oscillation in this condition.
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