Due to a variety of degradation factors in medical imaging process, the existed segmentation algorithms are still hard to satisfyingly meet the need of higher layer applications.

由于医学成像过程中存在着各种退化因素，当前各种分割算法仍难以很好满足高层应用的需求。

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As far as the degradation and the use of the lignocellulose are concerned, the middle and lower layers of the compost are almost the same as the upper layer of the compost.

就菌袋中不同料层木质纤维素的降解和利用而言，菌袋的中层和下层与上层相似。

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Study shows that: incised valley of the rock mass caused by unloading relaxation, caused by rainwater infiltration rock strength degradation is the formation of red layer a major factor in landslides.

研究表明：河谷下切引起的岩体卸荷松弛，雨水进渗导致的岩体强度衰减是导致红层滑坡形成的主要因素。

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