一般指检波器对不同方向的响应。方向特性分两类：一种是检波器对地表质点振动方向的响应关系，称为第一类方向特性，常常绘在极坐标系中。
...方向特性 [gap=1080]Key words：face recognition；feature extraction；singular value decomposition；directional characteristic ...
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... directives for construction 施工指令 directivity characteristics 方向特性 directivity curve 方向曲线 ...
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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
然后利用方向可变滤波器检测图像边缘及边缘方向特性；
Then with the help of steerable filters, the method detects image edges and the orientations of them.
鲁棒故障检测滤波器方法使残差既有干扰解耦特性又有方向特性。
The robust fault detection filters can ensure that the residual error, generated by this filter, has both robust and directional properties.
在严重的各向异性岩石中，准剪切波有复杂的方向特性，并有歧点。
For severely anisotropic rocks, the quasi-shear waves exhibit complex directionality, with cusps.
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