第二部分工作则从前面合成得到的C3对称的三维骨架出发，通过动态共价化学的方法定量地合成得到了一系列刚性的纳米级荧光笼状结构。
In the second part, a readily modifiable structure with C3 symmetry was developed to quantitatively build a series of 3D shape-persistent fluorescent nanocages via dynamic covalent chemistry.
针对3维模型检索算法性能较低的问题，提出了一种基于整数中轴骨架的3维模型检索算法。
To improve the efficiency of 3d model retrieval, an algorithm for 3d model retrieval based on integer medial axis skeleton was proposed in this paper.
先通过预处理提取出血管并进行三维细化，再递归跟踪血管骨架生成特征树并进行遍历提取出血管的分支点和端点。
The vessel skeleton was recursively tracked to generate the feature tree and the tree was traversed consequently to pick up the branch points and end points.
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