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.
因为当啮合频率接近于齿轮系的固有频率时容易发生共振。
Because when the frequency of close to the meshing of gears susceptible to the natural resonance frequency.
全液压调速系统的油压容易产生脉动，如果油压脉动的频率与电力系统固有频率接近时也可能引发电力系统共振机理的低频振荡。
If the frequency of oil-pressure pulsation is near to power system natural oscillations frequency, power system low frequency oscillations of resonance mechanism can be induced.
当发电机的外接负载不对称时，转子的固有频率一分为二，转子的振动在原来单频振动的基础上，产生了双重共振现象。
Its natural frequency falls into two parts when the loads exerted on generator rotor are asymmetrical. Dual resonance phenomenon appears based on the former single frequency vibration.
并联负刚度弹簧不但显著降低了隔振系统的固有频率，同时也改善了系统的阻尼特性，提高了隔振系统产生高频内共振的频率。
Paralleling negative stiffness can not only decrease the isolator's natural frequency, but also improve the damping characteristic and increase the internal resonant frequency of the isolator.
数值分析结果表明：在水平地震作用下，地震波频率与边坡的第二阶固有频率一致时，才会发生共振。
Numerical results show that under the influence of horizontal seismic action, resonance will occur when the seismic wave frequency is identical to the second-order natural frequency of slope.
并且当漩涡脱落频率与杆件的固有频率接近时，杆件会产生漩涡脱落共振或称涡激共振。
Besides, in case the vortex shedding frequency is equal to a vibration frequency of structure, the rod will occur the vortex shedding resonance or called vortex resonance.
当振动源频率和皮带秤固有频率接近时，皮带秤将发生共振。
When the vibration source frequency approaches to the natural frequency of belt weigher, the belt weigher will bring resonance.
通常当闸门的水平摆动频率接近索的固有频率时，将产生横向共振。
In general, the flexural resonance occurs when the frequency of horizontal motion of the gate approaches the natural frequency of the cable.
本文通过实例说明冲击隔离的计算与橡胶冲击隔离器的设计方法，在满足冲击隔离的条件下，为了避开共振，以免设备产生过大的位移振幅，对隔离系统的固有频率进行了计算。
To meet the needs of shock isolation the natural frequencies of the system are evaluated so as to avoid resonance and get rid of excessively large displacement amplitude of the system.
设计车厢时，应尽量使其固有频率错开激振频率，以避免共振和噪声。
Design cars, the natural frequencies should be staggered so that the excitation frequency to avoid resonance and noise.
由模态分析看出，筛箱固有频率和工作频率不重合，因此在工作中不会产生共振。
According to the modal analysis, the natural frequency is not coincident to working frequency, so there would be no resonance occur during work.
结果发现优化前后支架的固有频率都远大于激励频率，不会产生共振，疲劳破坏主要由载荷超重引起的。
It is found that inherent frequencies are much larger than pumping frequencies and resonance cannot emerge before and after optimization. Fatigue breakage is caused by overload mainly.
由系统振动位移响应公式得出，当摩擦力变化频率与系统固有振动频率非常接近时就会出现共振。
When friction changing frequency is very close to natural frequency, there will be resonance from the vibration displacement response formula.
系统以其固有频率振动又叫共振。
A system oscillating at its natural frequency is said to resonate.
研究了系统固有频率受二值噪声扰动时，调制二值噪声驱动二阶过阻尼线性系统的随机共振现象。
The phenomena of stochastic resonance of an over-damped second-order linear system with modulated dichotomous noise are investigated.
利用解析方法分析了基座变形对微梁共振器固有频率的影响。
The effect of base structural deformation on inherent frequency of a microbeam resonator is analyzed by using analytical method.
球头铣刀在外力作用下的振动频率离固有频率较远，不会发生共振现象，由此引起的刀具振动和变形较小。
Vibration frequency of ball end mill by an external force is far from the natural frequency of it, resonance phenomenon does not occur, so vibration and deformation of ball end mill are not abvious.
该分子具有大的TPA截面是起源于该分子的刚性平面共轭结构所固有的线性吸收特性和TPA共振增强；
The large TPA cross section may result from the intensive linear absorbance of the molecule due to its conjugate rigid plane structure, and the two-photon resonance excitation condition.
烧杯的固有频率可以用直接测量法、共振法或水滴流调制法加以测定，各法中均利用利萨如图形。
The intrinsic frequency of a beaker can be determined by means of direct determination, resonance or water drip modulation, and each of the methods makes use of the Lissajous figure.
模态分析结果表明，边坡的固有频率远低于爆破震动的主频，因此不会产生共振现象。
The results of model analysis indicated that the resonance phenomenon would not occur because the slope inherent frequency is well lower than the main frequency of blasting vibration.
并且当漩涡脱落频率与杆件的固有频率接近时，杆件会产生漩涡脱落共振或称涡激共振。
Besides, in case the vortex shedding frequency is equal to a inhere frequency of rod, the rod will arises the vortex shedding resonance or called vortex resonance.
为防止共振发生，电动机的工作频率应远远小于其固有频率。
In order to keep the normal operating state of a electro motor, the working frequency of the electro motor should be much lower than that of natural frequency.
并且当漩涡脱落频率与杆件的固有频率接近时，杆件会产生漩涡脱落共振或称涡激共振。
Besides, in case the vortex shedding frequency is equal to a vibration frequency of structure, the rod will arises the vortex shedding resonance or called vortex resonance.
由于非线性弹簧悬架没有固有频率，因此避免了在外界激励下发生共振的危险。
Because the suspension with non linear springs has no eigenfrequency, it could avoid the resonance under certain road uneven random excitations.
利用ANSYS软件对电子枪进行动力学模态分析可以得到电子枪的固有频率和振型。从而在结构设计上避免共振。
With Dynamical modal analysis of electron gun by use of ANSYS software, we can get the inherent frequency and vibration model, which can avoid sympathetic vibration.
增强磁共振血管成像显示由尺动脉发出的食指固有动脉（直箭头）朝着指尖小的强化病灶（弯箭头）。
Contrast-enhanced MR angiogram shows the proper digital vessels, with the ulnar artery to the second digit (straight arrow) coursing toward a small enhancing lesion in the fingertip (curved arrow).
推导出了描述油管柱振动规律的波动方程、固有频率方程、油管柱振动位移方程等数学模型。研究了引起油管柱产生共振的激励频率与油管柱固有频率的关系等。
From which the mathematical models like wave equation, natural frequency equation and tubing string vibration displacement equation used to describe the tubing string vibration laws have been educed.
当响应频率等于派生系统的固有频率时，将会出现主共振、超谐共振和组合共振现象；
When the response frequency is equal to the eigen-frequency of a derived system, harmonic resonance, super-harmonic resonance and combined harmonic resonance may occur.
当响应频率等于派生系统的固有频率时，将会出现主共振、超谐共振和组合共振现象；
When the response frequency is equal to the eigen-frequency of a derived system, harmonic resonance, super-harmonic resonance and combined harmonic resonance may occur.
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