critical frequency
英 [ˈkrɪtɪkl ˈfriːkwənsi]
美 [ˈkrɪtɪkl ˈfriːkwənsi]
临界频率
双语例句
- The results show that the turbopump faults can be detected effectively by using the amplitudes of rotor first, second and third order critical frequency as well as axial intrinsic frequency.
结果表明，基于转子的一阶、二阶和三阶临界转速以及轴向固有频率幅值能有效地检测涡轮泵的故障。 - In this paper, the effectual step which could improve the critical frequency characters of active low pass filter were put forward, theoretical analysis was made for it.
提出了改善有源低通滤波器截频特性的电路设计，并从理论上进行了分析。 - During ionospheric storm periods, the existing prediction methods for the critical frequency of ionospheric F2 layer ( foF2) can not satisfy the requirements of the practical applications.
在电离层风暴期，现存的电离层F2层临界频率预测方法不能满足实际应用的要求。 - Analysis of Critical Frequency of Parameter-Excited Resonance
参数共振临界频率的分析 - This paper uses wavelet theory in noise-robust feature extraction of speech recognition and introduces a feature extraction method based on Gauss wavelet filter. The Gauss wavelet filter with human critical frequency band is obtained by studying human auditory characteristics.
把小波理论应用于抗噪语音识别特征提取，提出了基于高斯小波滤波器的语音识别特征提取方法，通过对人耳听觉特性的研究，按照人耳临界带宽设计了一组高斯小波带通滤波器。 - The dynamic character of the rotor system is the same as that without magnetic field when the magnetic field frequency is over a critical frequency, and the sinusoidal magnetic field cannot control the dynamic performance of the disk-type MR fluid damper.
当磁场的频率高于一个临界频率后，转子系统的动力特性与无磁场时的动力特性相同，正弦磁场不能够控制磁流变流体阻尼器的动力特性。 - The results show that, for the case of detuning, both the second threshold and the critical frequency are always increased with the increasing of the detuning parameter.
结果表明，在失谐情形下，第二阈值和临界自脉冲频率都随失谐参量的增大而增大。 - The main feature of flutter is that exists a critical status-critical wind velocity and critical frequency.
颤振的重要特征是存在颤振临界状态，即颤振临界风速和颤振临界频率，当作用风速低于颤振临界风速时，结构物对外界扰动的响应会因为阻尼的作用而衰减； - The differential equation of motion for a viscoelastic rod with point elastic supports under the action of axially periodic load is derived by Lagrange ′ s equation. By using dynamic stability theory, the critical frequency equation and dynamic stability boundary of the rod are obtained.
利用Lagrange方程推导了在轴向周期压载作用下点弹性支承粘弹性杆的运动微分方程，并由动力稳定理论给出了杆的临界频率方程和动力不稳定边界。 - During process of design and selection of power supply filter, system engineers find that sometime, the adding of power supply filter have no proper role, but even make more noise at some critical frequency section.
在设计和选用电源滤波器的过程中系统工程师发现，加了滤波器以后作用不大，甚至会发生某些频段的噪声变大。 - And two examples are given to estimate critical frequency of a car control circuit and the matching impedance of a special wire.
给出了一种利用仿真估计电路临界频率和电缆（传输线）特性阻抗的方法。 - A cam-spring mechanism was used in a design of scanner, which dynamic characteristic can be described with a model of harmonic vibration, and the critical frequency for fast returning movement is given.
在采用凸轮扭簧机构驱动的某热像仪扫描器设计方案中，利用简谐振动模型来分析摆镜的回复运动过程，并得出了实现快速回扫所需要的角频率临界值。 - In wheel speed signal processing, a critical frequency/ voltage conversion circuit is added.
在轮速传感器信号的处理方面，增加了关键的频率/电压转换电路。 - Modification to the participation mass ratio method is performed based on the power spectrum density consistent with the response spectrum in code for seismic design of buildings. The critical frequency control method presented in this paper has been proved to be reasonable and effective.
本文根据对应规范反应谱的当量功率谱密度对质量参与系数法做出修正和完善，提出临界频率控制的方法，计算结果表明，此方法合理有效。 - The first order approximate formulae for the critical frequency of hybrid modes are derived. The accuracy of these results are satisfied.
给出了截止频率的一阶弱导近似公式，并以截止频率和时延差为例，比较了一阶近似与Gloge近似的计算精度。 - Based on the nonlinear paraxial wave equation, the propagation equation of small-scale perturbation of divergent beams has been deduced with a coordinate transformation. The evolvement law of the growth critical frequency of small-scale perturbation, maximum growth frequency and relative B integral is obtained.
从非线性傍轴波动方程出发，利用坐标变换，推导出发散光束小尺度扰动的传输方程，进而得到小尺度扰动增长的临界频率、最大增长频率和相应B积分值的变化规律。 - A method based on linear vibration theory is presented in this paper, aimed at resolving the inertial compensation problem for some special models which cause two or more vibration modes that lie in the critical frequency range in impulse wind tunnel force tests.
为解决在高超声速脉冲风洞中进行大长细比等特殊模型测力实验所面临的惯性补偿问题，笔者提出了多加速度计振动分离惯性补偿方法。 - The nonlinear dispersion equation was derived. It is found that there is a critical frequency in the nonlinear s polarized surface waves. Below this frequency, the nonlinear s polarized waves on the interface are backward surface waves.
求出了非线性色散方程，揭示了非线性s偏振表面波存在一个临界频率，低于这个频率，非线性s偏振波是后向表面波。 - This paper proves one to one correspondence single value function relationship between critical frequency of a torsional system of three disks and its damping by mathematical means.
本文用数学方法证明了三圆盘扭振系统的共振频率与阻尼之间的一一对应单值函数关系。在此基础上，提出了测定硅油减振器阻尼的共振法。 - The measured waveforms of discharge current confirm the difference in discharge form. The homogeneous glow discharge will appear in a certain range of high frequency, and the critical frequency is related to some factors, such as gas properties.
放电电流波形表明了放电形式的差异，在一定的高频段会出现均匀的辉光放电，其相应的临界频率还与气体种类等因素有关。 - This paper presents the critical frequency prewarping approximation to analyze the frequency character of the system model with wide frequency band, and compares the method with bilinear approximation and fourth order Runge Kutta method.
以频带较宽的典型环节为例，对系统频率特性进行了分析，同时，将其与双线性变换及四阶龙格－库塔法的计算结果进行了比较。 - In order to reduce the flight control system real time simulation error, the critical frequency prewarping approximation is adopted to compensate the error that resulted from the bilinear approximation.
采用改进的双线性变换方法&临界频率预翘曲方法，对双线性变换方法引起的偏差进行预补偿，从而减小飞控系统的实时仿真误差。 - The significance of the "critical frequency" and "ring frequency" in response is pointed out.
指出响应谱峰值中的“临界频率”与“环频率”的重要意义。 - A method which use an EMC software tool to simulate signal reflection in signal integrality is introduced, and an example is given to estimate critical frequency of a circuit by simulation.
通过软件仿真的方法研究了信号完整性问题中的信号反射。以实例的形式给出了一种利用仿真估计电路临界频率的方法。 - Then, a design method of active-passive composite isolation system based on the quality of power equipment, the lower frequency value of vibration frequency and the critical frequency ratio is derived.
进而提出了一种根据动力设备负载质量，激振频段下限频率值以及临界频率比设计主被动复合隔振系统的方法，完成了主被动复合隔振器主、被动环节的设计工作。 - For certain beams with exponential gradients, there exists a critical frequency depending on the gradient parameter.
对某一指数梯度梁，存在一个依赖梯度参数的临界频率。 - This article describes the mechanism of electromagnetic waves propagation in the thermosphere, the critical frequency and peak height of each layer will be predicted. Ionospheric absorption loss characteristics and ionospheric echoes of high frequency surface wave radar will be discussed.
本文介绍了电磁波的电离层传播机理，预测了电离层每一层穿透频率特性和峰值高度特性，分析了电离层吸收损耗特性。 - Traditional capillary theory can explain the issue of maximum absorption coefficient for nonwovens. About critical frequency issue, the theory of membrane vibration can obtain an anastomotic result.
传统的多孔材料毛细管吸声理论基本可以解释非织造布样品吸声系数的问题，应用膜振动理论来解释吸声频率的问题，也得到了较为吻合的结果。