Clear skies are detected firstly by peak frequency density of ratio (PFDR) method.
首先采用比值概率密度峰值法，初步选出晴天时刻。
The leading-edge serrations have no effect on the instability noise peak frequency.
前缘锯齿对边界层不稳定噪声峰值频率没有影响。
Ferromagnetic resonance frequency change might lead to signal attenuation peak frequency corresponding change.
亚铁磁共振频率的改变会引起信号衰减峰值出现频率的相应改变。
The example shows that the energy of vibration respondence is mainly distributed over the peak frequency of the wave force.
算例表明，振动响应的能量集中分布在波浪载荷的峰值频率处。
Analysis of harmonic response found out the peak frequency of the joint possible to resonate and the stress and strain under peak frequency.
谐响应分析主要是研究联轴器的幅频响应特性，分析其可能的共振峰值频率以及峰值频率下的应力应变情况。
Caleulation shows that there is a peak frequency in these spectrums and the frequency depends on turbulent outer scale and transversal wind.
计算表明这些频谱中存在一个与湍流外尺度、横截风速有确定关系的峰值频率。
Studied two conditions of acoustic signals when it was single-phase gas and two-phase flow in the pipeline from sound spectrum, acoustic energy, peak frequency and amplitude.
分别从声波频谱，声波能量，峰值频率，以及幅值等方面对管道内为单相气体和两相流体两种状态下的声波信号进行了研究。
The auto power spectrum of phase function commonly has two extreme frequencies, and the corresponding frequency components decide the peak characteristics of phase function.
相函数的自功率谱一般具有两个峰值频率，其相应的频率分量决定相函数的波峰特征。
The descriptive statistics for body weight normalized strength, normalized peak EMG, time to onset, time to peak, median frequency, mean power frequency, and frequency bands were calculated.
对于力量与体重、肌电图的峰值、起始时间、峰值时间、中位频率、平均功率、和频段均进行标准化描述后进行统计计算。
Partial transmit sequences (PTS) is a method with high complexity to reduce the Peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) system.
部分传输序列(PTS)是一种复杂度较高的减小正交频分复用(OFDM)系统峰均功率比(PAPR)的方法。
The ozone formation rate increased linearly with increasing pulsed peak voltage and discharge frequency.
脉冲电压峰值和放电频率与臭氧生成速率均几乎有线性关系。
With the subaperture method, data rate and radar transmit peak power can be effectively reduced, the time variant of Doppler center frequency can be resolved.
通过子孔径方法，可以有效降低数据率及雷达发射峰值功率，并可解决多普勒中心频率的时变问题。
The variation of frequency curve's mode peak content with the increasing of depth, shows not only the trend of chemical weathering but also variation gradient of weathering extent.
频率曲线众数峰含量随深度的变化，不但指示了化学风化趋势，而且反映了风化程度的变化梯度。
A new method is proposed to reduce the peak-to-average power ratio of orthogonal frequency division multiplexing system.
提出了一种新的降低正交频分复用系统峰均功率比的方法。
According to the method, the relative overdamping can be expressed in a linear function of the product of the width of half peak of the response curve by the nature frequency of the geophone.
根据该方法，相对过阻尼系数能够表示成检波器响应曲线的半峰高宽度和检波器自然频率乘积的线性函数。
The dependence of the ac loss of coil-type samples on the peak value of magnetic field, magnetizing frequency, pitch of materials, matrix and diameter of filament were obtained.
得出了线圈型样品交流损耗与峰值磁场、励磁频率，材料扭矩，基体材料，细芯直径诸量间的依赖关系。
Only little differences in the frequency range under 1 MHz at different current peak values (Fig. 14 and Fig. 15) can be noticed except from some resonance frequencies.
除了几个谐振频率，在1兆赫兹以下的频带，干扰信号在不同峰值电流下测试出来的结果仅有微小的差别(图14和图15)。
Also the peak voltage width is tested under different input power at the highest frequency and the difference is analyzed.
在实用最高频率下、在不同输入功率时实测了的尖峰电压的宽度。
Peaking effects were found on the plot of internal friction vs strain amplitude or time when the resonant frequency of anomalous peak closed to the normal one.
当反常共振峰频率与正常共振峰靠近时，在内耗-振幅或内耗-时间图上呈现峰值效应。
Apply frequency conversion technique to save energy, improve the shift peak load capacity of electric network for the units and ensure the safe and stability operation of network.
利用变频调速技术节约电力，提高电网对机组的调峰能力，保证电网的安全稳定运行。
Considering the combined action of peak flood and flood volume, flood frequency use analysis by synthesis method in computer software.
考虑洪峰流量、洪水总量对洪水频率的共同决定作用，计算机软件中洪水资料频率的判断，采用综合分析法。
In the paper, the method to estimate instantaneous frequency of AM-FM signals using the peak of the WVD and its performances are studied.
该文研究了应用WVD谱峰检测估计AM - FM信号的瞬时频率的方法及其性能。
The degradation of methyl orange was high, which was related with the peak value, pulse frequency and duty circle of positive pulse and anode area.
甲基橙的脱色程度与峰值电压、脉冲频率、占空比、阳极电极面积等有关。
Increasing the eddy-current losses will not change the frequency of attenuation peak, but will increase the intensity of attenuation.
涡流损耗的增加不会改变衰减峰值的频率，但是会增大衰减强度。
Due to the lasing effect, the peak modulation frequency of extinction ratio and chirp occur at the relaxation oscillation frequency.
受激射效应影响，消光比及频率啁啾在弛豫振荡频率处达到极大值。
In this paper, the law of earthquake ground motion is analyzed comprehensively by taking account of duration, frequency characteristic and peak index of energy distribution.
本文从强震持时、频谱特性和能量分布峰态系数等三个方面对地震地面运动规律进行综合分析，提出了一种较为客观的地震地面运动分类方法。
Because the structure vibrates at some modal, a vibration peak value will appear at its noise frequency spectrum.
这是因为结构以某一阶模态振动时，将在其辐射噪声频谱上出现一个峰值。
Because the structure vibrates at some modal, a vibration peak value will appear at its noise frequency spectrum.
这是因为结构以某一阶模态振动时，将在其辐射噪声频谱上出现一个峰值。
应用推荐