Methods: By reference to the right-handed coordinate system, the three-dimensional positions of the femoral and pelvic attachment of the muscles related to the hip joint were all measured.

方法：以股骨头、髋臼的中心为原点建立股骨及骨盆的右手正交坐标系，将髋关节周围起于骨盆的肌肉的股骨、骨盆附着点的三维坐标位置进行了测量定位。

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Based on control equation of three dimensional elasticity in cylindrical coordinate system, the state equation is derived.

根据圆柱形坐标系的三维弹性力学控制方程，导出其状态方程。

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Aimed at three-dimensional footprint characteristic, the uniform coordinate system which is based on the footprint trace expert knowledge has been established for footprint image.

针对立体足迹自身特点，结合足迹痕迹检验专家知识，本文提出一种立体足迹图象的坐标系统构造方法。

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