给出了解决刚体平面平行运动问题的一组完整方程，讨论了力系简化在质心平面内的条件。
A integrated equation set for solving plane parallel motion of rigid body was derived, and the conditions of system of forces simplified on the center of mass plane was discussed.
给出了解决刚体平面平行运动问题的一组完整方程，讨论了力系简化在质心平面内的条件。
A integrated equation set for solving plane parallel motion of rigid body was derived, and the conditions of system of forces simplified on the center of mass plane was discussed.
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