Objective To study inductive osteogenesis of Haversian system and evaluate the clinical significance of the vitalization surface in the healing process of the massive cortical allografts.

目的研究大段同种异体皮质骨移植过程中哈佛系统的成骨作用，探讨大段同种异体皮质骨愈合活化表面的临床意义。

youdao

Measures such as development pattern transition, functional vitalization, characteristic intensification, and quality promotion shall be adopted to boost the renewal of the old commercial district.

应采取转换方式、激活功能、增强特色、提升品位等措施，促进商埠区的更新和改造。

youdao

It isn't as if the coastal communities who rely on the wetlands for protection and economic vitalization are choosing to live in dangerous places.

CNN: Your e-mails: Balancing nature, commerce