By exploiting wavelet packet transform to analyze signals both in time and frequency space, this paper researches the statistic property of non-Gaussian stationary noise and its signal structure.
该文利用小波包变换的时频局部分析能力，研究了非高斯分布平稳随机噪声的统计特性，揭示了非高斯噪声信号的信号结构。
Meet harvesters, harvester harvesters meet spring - according to the structure and way of unloading divided into stationary tilting side discharge type, shuttle and hopper.
矿车碰头，矿车碰头弹簧-矿车按结构和卸载方式不同分为固定式翻斗式侧卸式、梭式和底卸式几种。
The structure and permanent magnet synchronous motor model is presented, and then the mathematical model and state equation are structured based on the stationary and rotating coordinate system.
介绍了永磁同步电机的结构和模型，并在静止坐标系和旋转坐标系中建立数学模型和状态方程。
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