Objective: To analyze time frequence of carotid flow Doppler signal of normal and cerebral infarction cases, providing reference for clinical applications.
目的：分别对正常人和脑梗死患者颈动脉血流超声多普勒时频分析，为临床应用提供参考资料。
The paper presents a kind of analysis of frequence- time relation according to characteristic of dopller signal and gives calculating results of a practical signal.
本文根据多卜勒信号的特点，提出一种分析频率—时间关系的方法，并给出一实际信号的计算结果。
Many parameters, such as current density, time on and off, pulse frequence, can be interceded in pulse electrolysis. This offers a powerful means to control quality of layer and aggradation speed.
脉冲电解可以调解电流密度、 电流的通断时间、脉冲频率等多个参数，为控制金属沉积层的质量和沉积速度提供了有力的手段。
Signal and it's Fourier transform can reflect the info of time domain and frequence domain independently.
信号及其傅里叶变换可以分别反映信号在时频两域内的信息。
On the research of convolutive mixtures, deal them with algorithm either in time-domain or frequence-domain.
在卷积信号的分离算法研究中，用到了频域和时域算法，并对算法性能进行了对比。
On the research of convolutive mixtures, deal them with algorithm either in time-domain or frequence-domain.
在卷积信号的分离算法研究中，用到了频域和时域算法，并对算法性能进行了对比。
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