... constant amplitude carrier 等幅载波 constant amplitude system 等幅系统 Constant Amplitude Fatigue Testing 横幅疲劳试验 ...
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利用近50年的系统定位观测资料，分析红松果材兼用林不同林分密度与直径、树高、冠幅等主要测树因子的关系。
By using observation data over 50 years, the paper systematically analyzed the relations of different stand density with diameter, height, crown of trees and so on.
讨论了脉冲激励幅值以及系统阻尼等对冲击谱的影响规律。
The regular pattern of influence on impact spectra by amplitude of pulse excitation and system damping was discussed.
运用数字滤波、傅立叶变换，以及幅值分析和基于神经网络的专家系统等方法对信号进行监测和诊断。
In the structured system, signals are proceeded by low-pass filter, Fourier Trans form, range analyzing and expert system based on Neural Network.
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