针对板的主共振问题,主要讨论了板在热-机载荷作用下的主共振稳定性问题,求得系统主共振的近似解,并进行数值计算。
Aimed for the main resonance of plate, mainly discussed the main resonance stability in hot-machine load, Obtained the approximate solution of the main resonance system, and the numerical calculation.
对于有机化合物的酸碱度问题,作者从共振论的观点出发,应用共振稳定作用原理,对某些有机物的酸碱性进行了分析和判断。
It applied principle of Resonance Stabilization action to carry out new explanation and analysis in acids bases activity of organic compounds.
在太阳系,就有轨道相互交叉,共振能保持其稳定的轨道的例子。
In a solar system in which orbits cross each other, resonances can keep the planets in stable tracks around their stars.
脊髓空洞症可借由磁共振成像来诊断。通过手术矫正致病因素,能使患者的身体状况趋于稳定或得到改善。
Syringomyelia may be diagnosed with magnetic resonance imaging. Surgery to correct the condition that caused the syrinx to form may stabilize or improve a patient's health.
为了简单可靠地增加转子系统的稳定性、抑制转子的共振振峰,提出一种新型的被动式电磁阻尼器。
For simply and reliably improving the rotor's stability and suppressing the resonant vibration around the first critical speed, a new passive electromagnetic damper was proposed.
乍看起来,自然会认为共振态不过是较稳定粒子的复合态。
At first sight it is natural to regard resonances as merely composite states of more stable part particles.
针对轮式起落架直升机,提供了一种“舰面共振”动力稳定性分析方法。
An analytical method of ship resonance dynamic stability countering the helicopter with wheel landing gears is provided.
分析了等跨布置的铁路简支梁桥在共振速度下的动力特性,及车辆运行平稳性和稳定性。
The bridge's dynamic features and train's running com fort under resonant speed of simply supported beams with equal spans are analyzed.
分析了主共振的振型、最大振幅、稳定性和振幅突变性。
The shapes, maximum amplitude, stability and amplitude jump of main resonance are analyzed.
研究了二阶线性系统在谐和与随机噪声联合作用下的主共振响应和稳定性问题。
The principal resonance of a second-order stochastic oscillator under combined harmonic and random parametric excitations is investigated.
大多数是晶体振荡器,它利用(石英)晶体固有共振的优点,所以频率稳定。
Most are crystal oscillators that take advantage of the inherent resonance of a (quartz) crystal to obtain frequency stability.
研究了一种利用晶振测量 真空度的方法,经试验,至少经两天老化后晶振的共振频率才能稳定;
A method to detect vacuum degree using crystal resonator had been investigated, and resonant frequency of crystal resonator could be stabilized after two days aging test at least.
传动轴主共振的最大振幅、稳定性、振幅突变性是其主要特性。
The maximum amplitude, stability and amplitude jump of main resonance describe the primary characters of a drive shaft.
强阻型振动而不是共振,有稳定的振幅。
Strong resistance type vibration instead of resonance, a stable amplitude.
从弹箭空间摆动和弹性振动耦合的动力学模型出发,对弹箭飞行过程中的共振不稳定性问题进行了研究。
Based on the coupled dynamic model for the spatial rotation and elastic vibration of a body, the resonance unstability of projectiles in flight is studied in the paper.
该诊断基于电子回旋脉塞不稳定性和回旋共振吸收。
The diagnosis is based on the theories of the electron cyclotron maser instability and cyclotron resonance absorption.
利用流动稳定性理论中的一般共振三波的概念,提出了湍流边界层近壁区域相干结构的理论模型。
The theoretical model of the coherent structure in the wall region of a turbulent boundary layer was proposed, using the idea of general resonant triad of the theory of hydrodynamic stability.
研究纵向共振时结构横向动力失稳问题,推导出有关的计算公式,并由例题计算给出一些定量结果,证明在动力稳定分析中必须考虑纵向共振的影响。
This paper analyses the influence of vertical resonance on horizontal dynamic stability of structure. It derives related calculating formulas and gives some rationing results from practical examples.
用平均法研究了含预紧弹性约束的单自由度系统在简谐激励下的主共振及其稳定性。
The primary resonance and its stability of a harmonically forced oscillator with a pair of symmetric setup elastic stops are studied in this paper by means of average approach.
得到了复合材料传动轴比钢、铝合金传动轴运动稳定性好、主共振的振幅小等结论。
Conclusions of that the motion stability of a fiber composite drive shaft is better and the main resonance amplitude is smaller than that of a drive shaft of steel or aluminum are produced.
通过磁体的测试,可知磁体的均匀度、磁场场强的温度稳定性、磁体的总体稳定性良好,完全可以给核磁共振全直径岩心分析仪营造一个合适的匀场环境。
By testing, homogeneity of magnetic field, magnet stability in temperature, integral stability is good. Magnet can create a proper a uniformity region for NMR core analyzer.
针对滑橇式起落架直升机 ,提供了一种“地面共振”动力稳定性分析的方法。
An analytical method of ground resonance dynamic stability countering the helicopters with ski landing gears is provided.
参数不稳定或共振比普通共鸣,因为它是由具有危险反应指数增长幅度甚至在阻尼的存在。
Parametric instability or resonance is more dangerous than ordinary resonance as it is characterized by exponential growth of the response amplitudes even in the presence of damping.
通过顺磁共振的方法证实了反应过程中二价铜和稳定自由基的存在。
The electron spin resonance (ESR) spectrums demonstrated the existence of Cu(II) and stable radicals during the polymerization process.
分析了主共振的振型、最大振幅、稳定性和振幅突变性。
The maximum amplitude, stability and amplitude jump of main resonance describe the primary characters of a drive shaft.
众所周知,当一个过程具有共振态、积分电路及不稳定设备传递函数的特点时,同样很难得到较好的闭环步进回应。
Also, it is well known that it is difficult to get good closed-loop step responses for processes with resonances, integrators and unstable plant transfer functions.
在分析与探讨脉动轴向力作用下梁的参数共振问题时,本文取四种边界条件来分析第二阶次谐波参数共振的稳定区域,确定了零解与非零解的稳定性。
This paper investigates the subharmonic parametric resonance problems of a symmetric orthotropic laminated rectangular plate with simply supported edges by the use of the singularity theory.
在分析与探讨脉动轴向力作用下梁的参数共振问题时,本文取四种边界条件来分析第二阶次谐波参数共振的稳定区域,确定了零解与非零解的稳定性。
This paper investigates the subharmonic parametric resonance problems of a symmetric orthotropic laminated rectangular plate with simply supported edges by the use of the singularity theory.
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