在一特定的转动参照系中，利用相对运动的速度和加速度合成公式，通过一特定的相对运动简洁地导出常用坐标系中的速度和加速度表达。
Expressions of velocities and accelerations in usual coordinates are simply derived by means of the composition formulae of velocity and acceleration in special rotation reference systems.
通过把极坐标系作为该运动参照系而继续对模式进行积分。
The model is continued by imposing a polar coordinate system on the moving reference frame.
通过把极坐标系作为该运动参照系而继续对模式进行积分。
The model is continued by imposing a polar coordinate system on the moving reference frame.
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