从为有序元素集定义面积直方图出发，通过图像的阀值分解及层集等概念，面积直方图被扩展到了灰度图像。
Starting from the definition for a set of ordered elements, the area histogram has been extended to analysis gray -level image through the notions of image thresholding decomposition and level sets.
总结了强化液体除湿的一些措施，包括应用新型填料、扩展接触面积、在除湿剂中加入纳米级金属粒子等。
Summarizes some enhancement measures, including using new type packing materials, expanding contact area, and adding metal nanoparticles to liquid desiccant and so on.
为此，需要掌握塌陷地随开采活动的扩展规律、塌陷区面积、破坏程度和积水区范围等数据资料。
Thus it is necessary to obtain the data such as propagation law with the action of mining, the areas of subsidence areas, destroying degree and excess water section and so on.
为此，需要掌握塌陷地随开采活动的扩展规律、塌陷区面积、破坏程度和积水区范围等数据资料。
Thus it is necessary to obtain the data such as propagation law with the action of mining, the areas of subsidence areas, destroying degree and excess water section and so on.
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