excited oscillation造句

• Theory of the self - excited oscillation pulsed jet nozzle
  自激振荡脉冲射流喷嘴的理论分析
• Numerical study on self - excited oscillation combustion in a combustor
  燃烧室内自激励振荡燃烧的数值研究
• Self - excited oscillation
  自激荡器
• Simulative study on eliminating of self - excited oscillation in turning process via neural network control technology
  利用神经网络控制技术消除车削过程自激振荡的仿真研究
• This dissertation is devoted to the investigation of the influence of self - excited oscillation jet on heat transfer enhancement
  本课题将helmholtz共振腔所产生的自激振荡脉冲射流引入换热器以实现强化换热。
• Sometimes cavitation and self - excited oscillations may exist in the jet flow field . they may performance and lifetime of the servo valve
  射流流场产生的气穴不仅破坏流体的连续性,而且还引起振动和噪声,直接影响到阀的性能与寿命。
• The vortex - excited oscillation , wake galloping , rain - wind vibration and buffetting are the main cause of the fatigue in the vicinity of the anchorages on cables of cable stayed bridges
  涡激振、风雨振、尾流驰振、抖振等风致振动容易造成斜拉桥拉索锚固端疲劳，促使锈蚀加快，严重影响拉索的使用寿命。
• But sometimes self - excited oscillations and noise may appear in hydraulic flapper - nozzle servo - valve if its construction is not selected very correctly . if self - excited oscillations and noise appear in hydraulic servo - valve , the performance of hydraulic control systems may lose stability
  因它具有非常快的响应速度,所以是目前应用最广泛的伺服阀,但它也存在自激现象,容易产生自激噪声和振荡,严重影响伺服控制系统的稳定性。
• Firstly , the mechanism of self - excited oscillation was introduced . when the water jets from the inlet nozzle flows into the chamber , the momentum exchange between the jet and the liquid in the chamber occurs , thus to form an unstable shearing layer with certain thickness
  这是一种崭新的强化换热技术，流体脉动能够造成换热器全程的换热强化，而且自激振荡脉冲射流强化换热技术本身是一种无功强化的方法，无需输入外部能量来产生扰动。
• On the basis of the primary studies upon the nonlinear interactions between the unstable waves and the self - excited oscillations in the flow , experiments were focused upon the attenuation effects on the oscillations of tripping wires , side jets and deflected plates , and upon the mechanisms for the attenuations
  在对流动的不稳定波之间非线性相互作用过程和自激振荡的基本规律研究的基础上，实验研究了绊线、旁射流和折板削弱自激振荡的效果与机制。
• It will exert resistance and damping force to the torque motor armature , so that the dynamic performance , especially the stability , of flapper - nozzle servo - valve can be improved . the self - excited oscillations and noise can be removed . at the same time , as magnetic fluid has a higher magnetic permeability , the efficiency of torque motor magnetic circuit can be improved
  由于磁流体具有的较大磁导率和较大的磁化强度,把磁流体添加到伺服阀力矩马达的工作气隙中,可提高伺服阀力矩马达的磁回路效率,增加伺服阀的阻尼,从而改善喷嘴挡板伺服阀的动态特性,抑制及消除其自激振荡和噪声。
• However , by comparison with flap nozzle servo valve which has been used widely and popularly by now , the torque motor of jet pipe servo valve has a larger rotary inertia . this causes low natural frequency of servo valve , and thus the response speed of jet pipe servo valve is slow . moreover , the jet pipe of servo valve has large flexibility , and it is easy to excite oscillations and noise in the valve , which is named self - excited oscillations and noise
  然而与目前普遍使用的喷嘴挡板伺服阀相比,射流管伺服阀的衔铁组件转动惯量大,导致力矩马达部分固有频率低,从而响应速度慢,此外,射流管供油管柔性大,容易产生自激现象,这些缺点都使得射流管伺服阀的动态特性差,从而影响了它的工作性能。