运动系统由骨、骨连结和骨骼肌三部分组成。
The motor system is composed of the bone, the bone union and the skeletal muscle.
目的介绍一种修复较复杂的颊部洞穿合并下颌骨缺损的手术方法。
Objective to introduce a method to repair the complex deficiencies of the mandible and cheek.
第二部分，膝关节骨性关节炎的步态分析研究。
The second part is the gait analysis of patients with osteoarthritis.
第二部分，膝关节骨性关节炎的步态分析研究。
The second part is the gait analysis of patients with osteoarthritis.
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