Each cell in a Voronoi tessellation is a convex polyhedron.

泰森多边形法中的每个细胞镶嵌是一个凸多面体。

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There was a significant difference of the proliferative potential index(proliferating cell nuclear antigen, PCNA index) between convex side and concave side at the upper end vertebra(P<0.05).

在上终椎椎体生长板凸、凹侧软骨细胞PCNA增殖指数有明显差异且有统计学意义（P<0.05）。

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As the pump light incident port of the heating cylinder is provided with the convex lens to increase the light intensity of pump light, the performance of the cavity-cell system is guaranteed.

在加热筒抽运光入射端口加装凸透镜增大抽运光光强，确保了腔泡系统性能。

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