查询词典 oscillation

A four\|node piezoelectric composite laminated plated element was implemented for dynamic analysis of adaptive structure. The damping ratios of truncated models were considered as the control objects, so that each of the structural modal oscillation could decay rapidly. Hence, the structural oscillation was effectively controlled.

利用四节点压电复合材料层合板单元进行自适应结构的有限元动力分析；采用模态控制方法，将结构的各阶模态的阻尼比作为控制目标，并以此计算出各压电片的控制电压，达到控制结构振动的目的。

The Dutch roll oscillation is a coupled lateral-directional oscillation that can be quite objectionable to pilots and passengers.

荷兰滚震荡是方向性与横向震荡的纠结对飞行员与乘客造成极不舒服的感觉

Based on the dynamics fundamental equation, the rigid ships rolling coupled oscillation model was established, then the definite condition of the coupled oscillation equation under the regular transverse wave and first-order ordinary differential equations were presented. The ship vibration rule under the regular transverse wave was analyzed by examples, simultaneously the influence of damping coefficient on the vibration type was discussed.

基于动力学基本方程，首先建立了刚性船舶横摇的耦合振动方程，然后给出了在规则横浪激励下的耦合振动方程的定解条件和一阶常微分方程组，最后通过算例计算了在规则横浪作用下船舶的振动规律，同时研究了阻尼系数等参数对其振动规律的影响情况。

Continuous casting experiments results show that in the mold oscillation coupled with AMMF EMCC, imposition of AMMF duty part during mold oscillation positive strip can deduce the withdraw resistance and improve the billets surface.

论文的第三部分，基于以上的一些研究，提出了又一项新的技术——调幅磁场下无结晶器振动电磁连铸技术，以期用结晶器外调幅磁场电磁力的振动来取代庞大的机械振动系统。

Based on theory of simple harmonic oscillation in physics,this paper presents a novel model for production decline prediction given by deformation of critical damping oscillation equation which is predigest.

基于物理学中的简谐振动原理，提出了把阻尼振动方程中的临界阻尼振动方程变形得到一种新的产量递减模型，可简化为Arps指数递减形式，经实例计算，可以用来预测油田产量，以此指导油田开发和管理。

Based on theory of simple harmonic oscillation in physics, this paper presents a novel model for production decline prediction given by deformation of critical damping oscillation equation which is predigested to Arps exponential decline form.

基于物理学中的简谐振动原理，提出了把阻尼振动方程中的临界阻尼振动方程变形得到一种新的产量递减模型，可简化为Arps指数递减形式，经实例计算，可以用来预测油田产量，以此指导油田开发和管理。

Based on description method of damping motion in mechanical vibration, variables movement of generator are divided into two basic motion models: damping oscillation and critical damping motion. Detail methods of extracting damping parameters from simulation data is introduced to establish variable motion models. An approximate method is put forward to simulate low-frequency signal and generator response characteristic, from which motion models and damping parameters of main variables are obtained. The influences of oscillation amplitude, frequency and initial operating point of power system to the motion damping parameters are analyzed.

借鉴机械振动中阻尼运动的描述方法，将低频振荡下发电机主要变量的运动归纳为阻尼振荡和临界阻尼两种基本运动形态；介绍了从仿真数据提取阻尼参数建立参数运动模型的方法，实现对发电机振荡特性的量化分析；提出一种系统侧低频振荡信号的近似模拟方法，并应用于发电机响应仿真，获得了主要变量的运动模型和阻尼参数；分析了系统侧振荡幅度、频率以及初始工况对发电机功角振荡的影响。

The motion of a type of nonlinear damped oscillation is analyzed to resort the method of numerical analysis, and compared it with the motion of the linear damped oscillation.

摘要用数值分析方法分析一类非线性阻尼振动问题，与线性阻尼振动进行比较，得到非线性阻尼振动状态每次过θ=0位置的时刻稍后于线性阻尼振动状态。

The motion of a type of nonlinear damped oscillation is analyzed to resort the method of numerical analysis,and compared it with the motion of the linear damped oscillation.

用数值分析方法分析一类非线性阻尼振动问题，与线性阻尼振动进行比较，得到非线性阻尼振动状态每次过θ=0位置的时刻稍后于线性阻尼振动状态。

The nonlinear oscillation of damped mechanical systems is applied to investigate the electrodynamics of long Josephson junction. The latter has been shown as equivalent to the weakly damped mechanical nonlinear oscillation system.

衰减机械系统的非线性振荡可用来研究长约瑟夫逊结的电动力学方程式，而这方程式等同于弱衰减机械系统的非线性振荡。

Article 3 The supply of urban water shall be subject to the principles of development of water supply, planned and sumptuary water use.

第三条 城市供水应当以发展供水和计划用水、节约用水为原则。

Result Clinical presentation of SNL includes fever, lymphadenopathy and leucocytopenia.

结果 临床特徵表现发热、淋巴结肿大、白细胞减少；抗EB病毒抗体阳性率高；淋巴结活检确诊。