After median filtering, image mode transforming, and "bad area" filtrating to images of soil layer, the authors extract the characteristic parameter of a image, that is gray-value, and c.
通过土壤表层图像的中值滤波、图像模式转换和“坏区”过滤，提取图像的特征参数——灰度值，并对土壤表层图像的灰度值与其含水率的关系进行了试验研究。
Aim at the mission of UUV, it chooses time critical striking as the object and do some research on its concept, mode, characteristic and the main parameter of striking effect.
针对UUV的具体使命任务，以“时敏打击”为目标，研究了UUV时敏打击的概念、方式、特点以及衡量UUV时敏打击效果的主要效能指标。
Especially, the process that the static instability mode transforms into the dynamic instability mode is simulated as the dynamic characteristic parameter increases to a certain value from zero.
特别分析了随着动力特征参数由零增加到一定值后，由静力失稳模态过渡到动力失稳模态的过程。
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