An external layer of compact Bone surrounds a central area of spongy Bone, except at the marrowcavity.
骨的外层为质密的骨皮质，包围着海绵状骨松质中心区（不算骨髓腔）。
2
ZGZTC can obviously increase the ratio of bone trabecula to marrowcavity and the average bone trabecula density of left femoral head(P<0.01).
壮骨止痛胶囊能明显提高模型鼠左股骨颈梁髓比和左股骨头区域的平均骨小梁密度（P<0.01）。
3
The paper introduces related research on judging age by X-ray picture of forensic anthropology from fusion time of stem epiphyseal and the change of humerus marrowcavity respectively.