Conclusions:There is a normal contact area between the inner surface of lateral femoral tendon and lateral femur condylar to reduce the contact pressure of the lateral surface of patella.
结论：①在正常情况下股外侧肌腱内面与股骨外侧髁存在着接触，这可能是缓解髌骨外侧关节软骨面压力的正常接触；
Based on the acoustic radiation mode analysis, the transfer matrix relating the pressure at every field point to normal component of surface velocity is formed.
基于声辐射模态分析，建立了外部场压和结构表面振动速度之间关系的传递矩阵。
The experimental result shows that the normal pressure distribution on the surface of the model blade is a conicoid, the maximum of the normal pressure is in the middle of the model blade.
研究结果表明，法向压力在模型铲刀表面呈二次曲面分布，在模型铲刀的中部取得最大值。
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