Around the Haversian canals, there are concentric lamellae, which look a bit like tree rings.

在弗斯管有许多同心薄片，看起来有点像树的年轮。

What we see here is the beginning of dense haversian bone.

我们在这里看到的是致密佛骨的开始。

In the center of these osteons, there are hollow spaces called Haversian canals, which contain the blood supply and innervation for the bone cells.

在这些骨单位的中心，这个中空的部分被称作弗斯管，提供了为骨细胞供应血液以及神经支配的空间。

In osteoporosis, there's thinning of the cortical bone, widening of the Haversian canals and a decrease in the number of trabeculae in the spongy bone.

骨质疏松症中，皮质骨会变薄、弗斯管变宽、松质骨内的骨小梁数目减少。

It's also dotted with features known as Haversian canals, which are the pathways the blood vessels followed to bring nutrients to the fast-growing tissue.

布着被称为弗斯运河的特征，这是血管为快速生长的组织带来营养所遵循的途径。

So with osteoporosis, abnormal findings include fewer trabeculae in the spongy bone and thinning of the cortical bone, as well as the widening of the Haversian canals.

那么，骨质疏松的异常包括松质骨中的骨小梁会减少，皮质骨变薄，还有弗斯管变宽。

We know we begin with calcified cartilage that will form into primary bone and then mature into secondary bone and then eventually develop into something called dense haversian bone.

我们知道我们从钙化软骨开始，会形成初级骨，然后成熟为次级骨，最后发展成一种叫做致密弗斯骨的东西。