在显微镜下，肝脏是由肝小叶为单位的网状结构。
When viewed under a microscope, the liver is seen as large network of units called hepatic lobules.
前言： 目的：骨质疏松是指单位体积骨量的减少与骨强度的降低。骨量减少和骨显微结构受损既而引起骨脆性增加的系统性骨科疾病。
Objective:Osteoporosis means that the bone weight per unit volume and bone strength reduce. which induce systematic osteonosus for increase of bone fragility.
不过在以后的30多年里，显微构造与组织分析只局限于少数学术单位和少数学者。
However, in the 30 years after that, the microstructural and petrofabric analyses were limited to a few academic institutions and a few scholars.
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