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这类图像的大气退化特征直接影响了图像的对比分析和理解。
Such kind of atmospheric degradation influence blocks the further image analysis and understanding.
通过辐照前后光谱反射系数的变化考察了实验样品的光学性能退化特征。
The degradation of optical property was investigated through changes of the spectral reflectance of specimens before and after the irradiation.
以占该区面积最大的紫色土退化为例，提出了该区土壤退化特征、类型和发生现状。
For example of degradation of purple soil which accounts for the largest area in this region, this paper mentions the characteristics, type and development of soil degradation in this region.
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