这说明材料强度提高并不是聚合物发生化学反应造成的，一般这种变化在加热状态下是可逆的。
This suggests that the self-stiffening is not the result of chemical changes in the polymer, which can usually be undone by heat.
目的：探讨核糖对大强度耐力训练大鼠血清生化指标影响的机理，为核糖作为运动补剂提供试验依据。
Purpose: This study discussed the mechanism of ribose impacting to serum biochemistry targets, which can provide examination base for using ribose as sport supplements.
目前常用的骨质疏松评价指标包括骨密度、骨代谢生化指标、骨生物力学强度及骨小梁显微结构。
The most widely used parameters of osteoporosis include bone mineral density, biochemical markers of bone metabolism, biomechanical properties and the microarchitecture of bone trabecula.
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