The frequency range of R-wave has been determined by use of frequency analysis.
并且根据频谱分析的方法确定了瑞利波的频率分布范围。
The theoretical analysis and experiment show this new scheme is effect at certain frequency range.
分析与实验表明，这种方案在一定的运行频率段是行之有效的。
The Wigner Ville time frequency analysis in conjunction with properly selected OFDM parameters is applied to evaluate the signal dynamic range performance over the low voltage power line network.
为了研究OFDM信号在低压电力线上的传输情况，运用基于维格纳分布的时频分析方法对电力线上的信号进行分析。
Experiment results prove that the system can acquire signals in the frequency range designed for sound card correctly, and can be applied in the domains of data acquisition and general analysis.
实验结果表明：该系统能够正确采集声卡设计频率范围内的信号，可用于该范围内的一般数据采集与应用。
In this case, time frequency analysis must be performed for every range cell to obtain range instantaneous Doppler (RID) image.
这时需要分距离单元进行时频分析，得到距离-瞬时多普勒图像。
Then the dynamic performance and the harmony response analysis are completed by means of finite element analysis, the resonance frequency range of system and other dynamic features are found.
然后在此基础上进行谐响应分析，得到系统的共振频率范围及其它动态特征。
This paper describes the principle, construction, performance and error analysis of the standard apparatus for underwater sound pressure in high-frequency range.
本文叙述高频水声声压标准装置的原理、组成、性能和误差分析。
To pump as an example, affecting its speed range, energy-saving effect of some of the major factors, was symptomatic of analysis and, on this basis that the scope of application of Frequency Control.
以水泵为例，针对影响其调速范围、节能效果的一些主要因素，进行了对症分析和探讨，在此基础上指出了变频调速的适用范围。
Firstly, the modal analysis of the cabinet show that some natural frequencies are in the frequency range of loads, so the dynamic and fatigue performance of the electronic cabinet must be analyzed.
由模态分析得到新旧机柜都有一些固有频率在激励载荷的频率范围之内，故对新旧机柜开展动力学分析；
To enlarge measurement range of particle rotational speed, a dual- frequency imaging method was presented, with mathematical analysis and proving experiment.
为提高颗粒转速测量范围，提出了双帧频拍摄法，并进行了数学推导和实验验证。
To enlarge measurement range of particle rotational speed, a dual- frequency imaging method was presented, with mathematical analysis and proving experiment.
为提高颗粒转速测量范围，提出了双帧频拍摄法，并进行了数学推导和实验验证。
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