In this paper, the instantaneous center method for the redaction of masses and forces is proposed.

本文提出了质量和力等效转化的速度瞬心法。

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To have to be involved "the method of instantaneous center", for the teaching at motion of plane of rigid body.

对刚体的平面运动的教学，必涉及“瞬心法”，而现行教材均只论速度问题。

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Instantaneous center of rotation-velocity vector method is the integration of instantaneous center of rotation analysis and velocity vector method.

将瞬心分析与速度矢量法相结合的瞬心—速度矢量法较转化机构法更为清晰、明了、直观。

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