Bone density contributes to the strength of the bones; and their density changes in response to body weight and to weight-bearing exercise.
骨密度代表骨的强度，骨密度依随体重和负重锻炼而相应升降变化。
The density changes very little after soaking when the compactness of aeolian sand is above 90%.
风积沙的压实度达90%以上时，浸水所造成的密度改变很小。
OBJECTIVE: To evaluate the bone density changes in the healing process of tibial plateau fractures in rabbits.
目的：观察胫骨平台骨折愈合过程中的骨密度变化情况。
Model tests of large driven pile jacked into sands were conducted to obtain the soil density changes due to the compaction.
通过砂土中的大型沉桩模型试验，得出了桩周土体相对密度的变化规律。
Based on the analysis of actual data of density during fermentation, the mathematic model of density changes during pink wine alcohol fermentation was established.
在分析桃红葡萄酒酒精发酵过程中密度实测数据的基础上，建立了桃红葡萄酒酒精发酵过程密度变化规律的数学模型。
With the mass injection of iodine contrast agent, cerebral CT perfusion mapping displays cerebral density changes caused by the contrast agent when it passes through capillary vessels.
脑CT灌注成像主要通过团注碘对比剂显示毛细血管内对比剂通过时引起脑组织密度变化状态。
After that it is pointed out that compared with soil density changes, water content change can result in more variations of coefficient of thermal conductivity and specific volume heat of loess.
相对于随密度的变化，黄土导热系数和比热容随含水量的变化尤为显著，含水量变化可以引起热参数较大的变化。
After that it is pointed out that compared with soil density changes, water content change can result in more variations of coefficient of thermal conductivity and specific volume heat of loess.
相对于随密度的变化，黄土导热系数和比热容随含水量的变化尤为显著，含水量变化可以引起热参数较大的变化。
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