Methods . apparent glucose diffusivity measurements were performed on 10 axial and 10 radial af specimens from bovine coccygeal discs . the dependence of diffusivity on compression was determined using 3 levels of strain ( 0 % , 10 % , and 20 % ) 方法：测量来自牛尾骨椎间盘纤维环10个轴的和10个辐射的样品来获得葡萄糖近似扩散系数。压缩状态下的扩散系数决定于3个等级的拉伸( 0 % , 10 % ,和20 % ) 。
2.
With the hand ok and apparent feeling arrives ( buttock channel upside slants a side ) , the eye also can see all round the skin has grind chrysalis regularly , when standing naturally spend gently bow - backed , feel oneself is coccygeal needle in ache when sit - ups ( did afore - mentioned semiotic people already grow up 25 years old ) whether to need treatment 用手可以明显触摸到（臀沟上部偏一侧） ，眼睛也可看到四周皮肤有经常性的磨茧，自然站立时轻度驼背，自感作仰卧起坐时尾骨尖处疼痛（上述症状人已成年25岁）是否需要治疗？
