This experiment prepares ACEM by removing cell components and carries morphologic study to provide foundation for new natural supporting material of bone tissue engineering.

本实验进行脱细胞骨基质制备，去除细胞成分，并进行形态学观察，为骨组织工程的新型天然支架材料提供依据。

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In order to reflect the characteristics of geotechnical material more exactly, the strain-softening model was built based on the engineering background of one deep foundation reinforced by soil nail.

为了更加真实地反映岩土体材料的特性，以某深基坑土钉加固工程为背景，建立相应的应变软化模型。

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The surrounding rock engineering geology is not only the material foundation of producing disasters in loess tunnel, but also the carrier of studying the geological disasters.

围岩工程地质条件既是产生隧道地质灾害的物质基础，又是研究隧道地质灾害的载体，撇开人为因素隧道地质灾害都可以从围岩工程地质条件中找到根源。

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