From analysis of research basis and development of urban disaster science, the theoretical framework and branches of urban disaster science are discussed in the paper.
本文在分析城市灾害学的研究基础及进展的同时，探讨了城市灾害学的理论框架及分支学科。
The forms of her sculptures are natural extensions of the trunks and the branches of the trees, and are harmoniously re-inserted in the natural framework of the forest.
她雕刻作品的结构是树枝树干的自然伸展，与森林的自然景观浑然一体。
Theoretical analyses of fishbone modes based on the ideal MHD framework have predicted that two branches of modes exists.
现有鱼骨模理论是建立在理想磁流体近似基础上的，它预言有两支不稳定分支。
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