three-dimensional coordinate system 空间坐标系 ; 三维坐标
three-dimensional system of coordinate 三维座标系 ; 三维面
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。
Developes a three-dimensional heat transfer program in the cylindric coordinate system.
开发了一个三维柱坐标系下冷却壁传热计算的计算机软件。
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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