论述了区域几何形状分布特征增强的差分动态二值化方法，阐述了特征稀少图像的拼接原理和计算步骤。
For enhancing the region geometric shape features we described a Difference Dynamic Binary Method. And then the merging principle of images on which there is little point's feature was discussed.
砂砾石填料的渗透特性与颗粒的形状、大小及分布特征关系密切。
Permeability performance of rockfill is closely related to the particle shape, particle-size and its distributing characteristics.
可根据实验模型的布局特征选择在水平面内可变形状的零洞壁干扰目标线，以改善模型区残余干扰分布特性。
The transformable target line without wall interference can be chosen according to the test model to improve the residual interference distribution in model area.
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