The merit of both shift invariance and directional selectivity enables the complex wavelet to overcome the artifacts in the discrete orthonormal wavelet denoising.
由于复数小波具备平移不变性和方向选择性等优点，使得它在图像去噪中可以克服离散正交小波变换去噪中存在的毛刺现象。
The new DFB can provide good directional and frequency selectivity.
新的方向滤波器组具有良好的方向和频率选择性。
Further more, we give an explanation of the intrinsic implication of the present method and our comprehension about directional orientational selectivity and preferred direction orientation.
本文对此方法的内在含义作出了解释，并提出了对方向、取向选择性及最优方向、取向的理解。
Protection for these isolated systems has been a relatively simple task, which is carried out using over current directional relays with selectivity.
采用具有选择性的过电流方向继电器，对这种相互分隔直流系统的保护相对就简单。
Protection for these isolated systems has been a relatively simple task, which is carried out using over current directional relays with selectivity.
采用具有选择性的过电流方向继电器，对这种相互分隔直流系统的保护相对就简单。
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