principal frequency meaning in Chinese
主频率
Examples
- For example , the quenching and quenching plus low tempered structure of 38crmoal are hard to be differentiated by velocity method and the principal frequency technique . it will be better if they are differentiated by the method of relative attenuation coefficient
38crmoal钢的淬火与淬火+低温回火组织，用声速法和主频率比较法都难以区分，最好的方法是比较功率谱谱峰特征(幅度、数量、分布) 。 - We discussed the main characteristic parameters of seismic kinesiology and dynamics of mine engineering fracture zone , including relative amplitude , phase time of wave crest , similarity factor , principal frequency band energy , 3 - d space time gradient and coherent coefficient et al . , and puts forward the processing method of 3 - d seismic characteristic parameters about denoise - smoothing , generalization , correlation analysis , characteristic transformation ; and presents the method of pattern recognition of mine engineering fracture zone
摘要本文从时间域、频率域、三维空间域介绍了矿山工程裂隙破碎带主要的地震运动学、动力学属性参数，包括相对振幅、波峰相位时间、相似系数、主频带能量、二维空间时间梯度和相干系数等，提出了矿山工程裂隙破碎带三维地震属性的去噪平滑、归一化、相关分析、特征变换的处理方法以及裂隙破碎带的模式识别原理与方法，并用实例说明了该方法的应用效果。 - Abstract : through transient spectrum analysis , we can obtain such parameters as transient central frequency , transient frequency width and transient principal frequency . these parameters indicate dynamic characteristics of real signals , benefit the study of dynamic characteristics of radar wave , and can prvide multiple parameters for integrated interpretation of the radar profile
文摘:通过瞬态谱分析，可以求得瞬时中心频率、瞬时频宽、瞬时主频等参数表征实信号动力学特征，有利于对雷达波动力学特征的研究，并可提供多参数对雷达剖面进行综合解释。 - Because of the good sensibility , ultrasonic narrow band signal analysis technique with 1mhz central frequency was chosen to differentiate the heat treatment samples above - mentioned . there are obvious differences among heat treatment products in principal frequency , spectral peak ' s quantity , amplitude and distribution . that is to say , the technique of ultrasonic narrow band power spectral can be applied to characterize the microstructures of multi - phased alloy steels
利用窄带信号频谱分析技术灵敏度高的突出优点，选取中心频率为1mhz的窄带超声信号，对上述不同热处理试样进行超声功率谱分析，发现不同热处理产物在功率谱主频率、谱峰特征(幅度、数量、分布)等方面，都存在不同程度的差异。