方向特性 directional characteristic ; directivity characteristics
方向特性图 directivity graph
电场平面内的方向特性 electric plane characteristic
方向特性的 directional characteristic
方向控制特性 direction control
针对离散小波变换具有平移变化性和弱方向性的特性，本文提出了一种基于双树复小波变换(DT - CWT)统计模型的医学图像纹理检索方法。
Presents a novel texture retrieval approach of medical images based on statistic model by Dual-Tree Complex Wavelet Trans - form (DT-CWT) for the shift sensitivity and poor directionality of DWT.
在微波暗室静区反射电平计算时常采用点源发射模型模拟天线的特性，它适用于低频段或方向性差的天线。
In calculation of reflected level of quiet zone in anechoic chamber, a spot emission model is often used to simulate antennas characteristic.
为了研究不同冲击速度条件下块煤冲击韧度的变化特征，以及块煤节理方向性对块煤冲击韧度的变化特性。
In order to understand the properties of impact toughness of coal with different impact speeds and the change of impact toughness of lump coal to joint directivity of lump coal.
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