Based on the theorem for the composition of velocities in theoretical mechanics, the author gives out the demonstration of the theorem of three instantaneous centers of velocity in general conditions.
本文运用理论力学中运动学的速度合成定理，给出了一般情况下平面机构运动三心定理的求证过程。
Based on the theorem for the composition of velocities in theoretical mechanics, the author gives out the demonstration of the theorem of three instantaneous centers of velocity in general conditions.
本文运用理论力学中运动学的速度合成定理，给出了一般情况下平面机构运动三心定理的求证过程。
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