英语语法分析

The healing of fracture mainly is the acceleration of osteogenic activities and endochondral ossification.

骨折愈合主要是成骨活动及软骨内化骨加速。

The regeneration of bone graft was the results of intramembranous ossification in cooperation with endochondral ossification.

移植骨的再生则是膜内化骨和软骨内化骨协同作用的结果。

They can also arise in endochondral bone; or primitive mesenchymal cells in the brain, meninges, membranous bone, or soft tissue.

它们可以起源于软骨内骨、或者脑内的间充质细胞、脑膜、膜内成骨或者软组织。